Introduction to Opportunity Cost

How parrots swing like monkeys
1m 36s
Air Date: 02/15/24

Like monkeys, parrots are also able to travel by suspending their body weight.

The force that makes up more than half of the universe
1m 40s
Air Date: 03/12/24

Dark Energy was first discovered in 1998, and scientists don’t fully understand it.

How America watched the solar eclipse
2m 13s
Air Date: 04/12/24

Millions witnessed the Moon cover the Sun on April 8, some viewers sent us their videos.

Are winters getting less snowy?
4m 49s
Air Date: 05/03/24

It’s not just your imagination, winters across the U.S. are changing.

New map of the universe hints that dark energy may be evolving
3m
Air Date: 05/03/24

Dark energy fundamentally shapes our universe and what astronomers know about it might be wrong.

When Whales Could Walk Preview
S51 Ep1 | 30s
Air Date: 01/31/24

Giant fossils uncovered in the Sahara Desert reveal new secrets of how whales evolved.

The whale that could walk
S51 Ep1 | 2m 48s
Air Date: 01/31/24

Today’s whales look nothing like their ancient ancestor.

Ancient whale fossils found in the desert
S51 Ep1 | 2m 10s
Air Date: 01/31/24

What is this whale skeleton doing in the Egyptian Sahara Desert?

Easter Island Origins Preview
S51 Ep2 | 30s
Air Date: 02/07/24

Surprising new evidence is rewriting the story of the giant stone heads of Easter Island.

How Ancient Easter Island statues “walked”
S51 Ep2 | 2m 17s
Air Date: 02/07/24

These giant stone heads were not dragged on sleds, as once thought.

What really led to the collapse of Easter Island?
S51 Ep2 | 2m 58s
Air Date: 02/07/24

What happened to the Rapa Nui civilization is shrouded in mystery.

Building the Eiffel Tower Preview
S51 Ep3 | 30s
Air Date: 02/14/24

Explore the engineering behind Paris’s iconic landmark, the tallest structure of its time.

Why is the Eiffel Tower Shaped Like That?
S51 Ep3 | 1m 58s
Air Date: 02/14/24

The Eiffel Tower was a completely novel design at the time it was built.

5 things to know about the Eiffel Tower
S51 Ep3 | 1m 40s
Air Date: 02/14/24

Did you know that the Eiffel Tower was once red?

Hunt for the Oldest DNA Preview
S51 Ep4 | 30s
Air Date: 02/21/24

Follow the quest to recover DNA millions of years old for the very first time.

A.I. Revolution Preview
S51 Ep5 | 26s
Air Date: 03/27/24

Explore the promise and perils of new A.I. technologies.

Great American Eclipse Preview
S51 Ep6 | 30s
Air Date: 04/03/24

Explore the spectacular cosmic phenomenon of a total solar eclipse.

The Sun is way more chaotic than you think
S51 Ep6 | 3m 59s
Air Date: 04/03/24

Every now and then the sun hurls a piece of itself into the solar system.

Secrets in Your Data Preview
S51 Ep7 | 30s
Air Date: 03/22/24

Find out who’s using your data and what you can do about it.

Is your phone listening to you?
S51 Ep7 | 4m 25s
Air Date: 03/22/24

It doesn’t have to – advertisers may already have all the information they want to know about you.

Astronaut Walter Cunningham on the Historic Apollo 7 Mission
32m 26s
Air Date: 01/25/23

He discussed the first crewed Apollo mission, Apollo 7, with NOVA in 1998.

The Mystery and Physics of the Spiral Football Pass
3m 43s
Air Date: 02/13/23

There are two key players involved: gravity and angular momentum.

Soothing Science: The Light You See at Sunset
8m 1s
Air Date: 04/04/23

Relax to the sound of the ocean and discover the science behind sunsets.

There’s Something Living in Wildfire Smoke
1m 59s
Air Date: 04/11/23

Wildfire smoke can carry harmful microorganisms long distances.

How the West Is Making It Rain, With Science
6m 22s
Air Date: 04/10/23

A method of boosting snow and rainfall may help ease drought conditions in the western US.

This Fungus Is Spreading Rapidly in Hospitals
3m 24s
Air Date: 04/24/23

Cases of Candida auris are increasing every year.

Could Whale Poop Help Cool the Planet?
2m 43s
Air Date: 05/12/23

Marine biologists unravel how whales and their poop trap carbon and feed the ocean.

What Made the Titan Submersible Design Unconventional?
5m 5s
Air Date: 07/03/23

An international investigation into the fatal submersible implosion is underway.

The nation’s first big offshore wind farm is coming
5m 22s
Air Date: 07/21/23

The first commercial-scale offshore wind farm in the US is being built off Massachusetts.

Rare Fossil Appears to Show Mammal Attacking Dinosaur
3m 26s
Air Date: 07/28/23

Could a small mammal take down a dinosaur?

Introducing the NOVA Science Studio Program
2m 42s
Air Date: 09/28/23

The NOVA Science Studio is a youth science journalism program for high school students.

How To Film Great Video With A Phone | NOVA Science Studio
3m 54s
Air Date: 09/28/23

NOVA producer Alex Clark shares 3 fundamentals of shooting with a smartphone.

Complete Guide To Editing | NOVA Science Studio Tutorials
16m 21s
Air Date: 09/28/23

Learn editing tips and techniques to ensure a cohesive story from start to finish

Mastering Lighting and Audio in Video | NOVA Science Studio
4m 4s
Air Date: 09/28/23

Elevate lighting and audio with these techniques to highlight creative storytelling

How To Do A Video Interview | NOVA Science Studio Tutorial
3m 56s
Air Date: 09/28/23

Interviewing is one of the most important parts of creating compelling videos

What to know about the “Ring of Fire” Eclipse
46s
Air Date: 10/13/23

The "Ring of Fire" eclipse is coming. Seriously, don’t look directly at it.

London Super Tunnel Preview
S50 Ep1 | 27s
Air Date: 02/01/23

Thousands race to build Europe's biggest construction project–London's new railroad.

How Engineers Soundproof a New Underground Train Track
S50 Ep1 | 2m 57s
Air Date: 02/01/23

Part of the new London track is directly below an iconic performing arts center.

These Trains Take Over for Their Drivers to Cut Travel Time
S50 Ep1 | 2m 54s
Air Date: 02/01/23

Can trains save their drivers time by changing direction on their own?

Star Chasers of Senegal Preview
S50 Ep2 | 27s
Air Date: 02/08/23

A visionary scientist investigates the deep history of astronomy in West Africa.

How to Calculate Time With an Islamic Astrolabe
S50 Ep2 | 2m 38s
Air Date: 02/08/23

It is one of Islamic science’s most important and complex astronomical instruments.

These Ancient Stones Helped Track the Seasons
S50 Ep2 | 2m 57s
Air Date: 02/08/23

Mysterious stone arrangements reveal Senegal’s ancient connections to astronomy.

Ancient Builders of the Amazon Preview
S50 Ep3 | 27s
Air Date: 02/15/23

Archaeological discoveries reveal traces of ancient civilizations in the Amazon.

Ancient Cliff Paintings in the Amazon
S50 Ep3 | 3m 20s
Air Date: 02/15/23

The painted cliffs of La Lindosa open a window onto the lives of Ice Age Amazonians.

Ancient Pyramids Uncovered in the Amazon
S50 Ep3 | 3m 56s
Air Date: 02/15/23

This discovery rewrites the history of complex societies on the continent.

New Eye on the Universe Preview
S50 Ep4 | 27s
Air Date: 02/22/23

See the latest stunning images and discoveries from the James Webb Space Telescope.

How NASA Colors Images of the Universe
S50 Ep4 | 3m 8s
Air Date: 02/22/23

Data image developers combine science and art to bring color to JWST's images.

JWST Searches for Life in Our Solar System
S50 Ep4 | 6m 22s
Air Date: 02/22/23

Can NASA’s most powerful telescope detect key ingredients for life as we know it?

Weathering the Future Preview
S50 Ep5 | 30s
Air Date: 04/12/23

Americans use ancient wisdom and new technology to fight extreme weather.

How Extreme Heat Overwhelms the Human Body
S50 Ep5 | 1m 26s
Air Date: 04/12/23

When it comes to extreme weather, heat can be a “silent killer.”

How Sewage Becomes Drinking Water
S50 Ep5 | 2m 51s
Air Date: 04/12/23

How do you make wastewater drinkable? It starts at the sewage treatment plant.

How Coating Roads Could Help Beat the Heat
S50 Ep5 | 1m 48s
Air Date: 04/12/23

A pilot program in Phoenix, Arizona aims to cool the city by making the ground less hot.

Chasing Carbon Zero Preview
S50 Ep6 | 29s
Air Date: 04/26/23

Here’s how the U.S. could reach net-zero carbon emissions by 2050.

Chasing Carbon Zero Sneak Peek
S50 Ep6 | 1m
Air Date: 04/26/23

A new film from NOVA examines technologies that could get us to carbon zero by 2050.

Why Induction Stoves Are Better for You and the Environment
S50 Ep6 | 2m 56s
Air Date: 04/26/23

Induction stovetops are an energy-efficient alternative to traditional gas stoves.

How Heat Pumps Can Help Cities Lower Carbon Emissions
S50 Ep6 | 4m 17s
Air Date: 04/26/23

Landlords are switching from gas furnaces to heat pumps to reduce their carbon footprint.

Saving the Right Whale Preview
S50 Ep7 | 27s
Air Date: 05/03/23

Follow scientists determined to save the critically endangered right whale.

Meet Snow Cone the Right Whale and Her Calf
S50 Ep7 | 4m 32s
Air Date: 05/03/23

Since 2010, the average time between North Atlantic right whale births has increased.

Scientists Attempt To Free Entangled Right Whale
S50 Ep7 | 3m 30s
Air Date: 05/03/23

Entanglement responders work to free a critically endangered whale from rope.

Hidden Volcano Abyss Preview
S50 Ep8 | 30s
Air Date: 05/10/23

Investigate one of the most powerful volcanic eruptions in recorded history.

Scientists Make Rare Discovery in Active Volcano
S50 Ep8 | 2m 58s
Air Date: 05/10/23

Volcanologists visit Tofua to study the volcano’s activity.

How an Underwater Volcano Produced a 60-Foot Tsunami
S50 Ep8 | 2m 35s
Air Date: 05/10/23

The most explosive event ever recorded on Earth—and the massive tsunami that followed.

Witnesses Recount Surviving a Volcanic Explosion
S50 Ep8 | 2m 57s
Air Date: 05/10/23

Hear witnesses share how they survived the most explosive event ever recorded on Earth.

Your Brain: Perception Deception Preview
S50 Ep9 | 29s
Air Date: 05/17/23

Neuroscientists discover the tricks and shortcuts the brain takes to help us survive.

How Your Brain Interprets Color
S50 Ep9 | 2m 24s
Air Date: 05/17/23

A vision scientist breaks down the infamous dress debate.

Your Memories Are Not as True as You Think
S50 Ep9 | 3m 51s
Air Date: 05/17/23

It turns out memories have a very shaky foundation.

Your Brain: Who’s in Control? Preview
S50 Ep10 | 29s
Air Date: 05/24/23

Dive into the subconscious to see what’s really driving the decisions you make.

How Trauma Can Alter Your Biology
S50 Ep10 | 4m 40s
Air Date: 05/24/23

Your ancestors' experiences might influence how your brain is wired today.

What Happens in the Brain When you Sleepwalk?
S50 Ep10 | 3m 55s
Air Date: 05/24/23

Some people can do complex behaviors like walking and driving while sleeping.

What If Part of Your Brain Was Missing?
S50 Ep10 | 2m 29s
Air Date: 05/24/23

An injury cost Phineas Gage part of his brain, but he lost something else too.

Ancient Earth Series Preview
S50 Ep11 | 1m
Air Date: 09/10/23

Witness the dramatic history of Earth, from its birth to the emergence of humanity.

Ancient Earth May Have Had Red Oceans
S50 Ep11 | 3m 34s
Air Date: 10/04/23

On Ancient Earth, rust deep in the oceans played a critical role in the formation of Earth

Ancient Earth Was a Hellscape
S50 Ep11 | 3m 9s
Air Date: 10/04/23

For millions of years, Earth was a fiery hellscape, inhospitable to life.

How Life Survived When Earth Was Covered in Ice
S50 Ep12 | 3m 6s
Air Date: 10/11/23

Hundreds of millions of years ago, Earth was encased in ice. How did life survive?

Giant Prehistoric Fungi Once Ruled the Earth
S50 Ep13 | 3m 43s
Air Date: 10/18/23

Fossils show that millions of years ago, 20-foot-high fungi grew on Earth.

Ancient Earth: Inferno Preview
S50 Ep14 | 30s
Air Date: 10/25/23

How did life bounce back after a cataclysmic extinction wiped out some 90% of all species?

The Catastrophe That Killed 90% Of Earth’s Species
S50 Ep14 | 1m 34s
Air Date: 10/25/23

An ancient catastrophe killed nearly all life on Earth - and an asteroid wasn’t to blame.

What Caused the Dinosaurs to Go Extinct?
S50 Ep15 | 1m 50s
Air Date: 11/01/23

How did an asteroid impact on one side of the planet cause global devastation?

Inside China’s Tech Boom Preview
S50 Ep16 | 30s
Air Date: 11/08/23

The inside story of China’s meteoric rise to the forefront of global innovation.

How 5G Is Transforming China
S50 Ep16 | 4m 28s
Air Date: 11/08/23

A tech war between China and the West is starting to heat up.

Inside Huawei: China’s Tech Giant
S50 Ep16 | 3m 40s
Air Date: 11/08/23

Working at Huawei can be intense - six day weeks and 12 hour days are the norm.

Why Mosquitos Are Humanity’s Deadliest Creature
S50 Ep17 | 3m 37s
Air Date: 11/15/23

About 80% of deaths caused by Malaria annually are young children, below the age of five.

How Malaria Shaped America
S50 Ep17 | 2m 34s
Air Date: 11/15/23

Today, Malaria is considered a tropical disease, but it wasn’t always that way.

Lee and Liza’s Family Tree Preview
S50 Ep18 | 30s
Air Date: 11/22/23

A family turns to science in their struggle to rediscover a history obscured by slavery.

Can DNA technology Help Rebuild a Family Tree?
S50 Ep18 | 3m 28s
Air Date: 11/22/23

A Black family uses DNA technology to unlock secrets of the past.

Could Antiviral Pills Change the Course of the Pandemic?
8m 12s
Air Date: 01/05/22

The FDA authorized use of the first antiviral pills to treat COVID-19 at home.

From Prison to Careers in STEM
8m 12s
Air Date: 01/12/22

Watch how four accomplished scientists began their careers or education in prison.

Can South Carolina’s Salt Marshes Be Saved?
8m 27s
Air Date: 01/26/22

Many seafood dishes depend on an ecosystem that's easy to overlook: The salt marsh.

Introducing NOVA’s Financial Lab
1m 22s
Air Date: 02/11/22

Practice making financial decisions by taking care of your pet through three mini-games.

What is 5G, and is it Safe to Use on Planes?
5m 39s
Air Date: 02/16/22

The 5G signal works in a fundamentally different way from 4G.

Animal-to-Human Organ Transplants
4m 59s
Air Date: 03/02/22

In a first, a 57-year-old man received a heart transplant from a genetically modified pig.

War Threatens Ukrainian Nuclear Power Plants
7m 9s
Air Date: 04/04/22

Ukraine's 15 active nuclear reactors generate about half of the country's electricity.

This Device Smells Diseases by Imitating a Dog’s Nose
4m 43s
Air Date: 05/26/22

Researchers at MIT create an electronic nose using chemical odor sensors.

The False Promise of Cloning Your Pet
6m 37s
Air Date: 08/16/22

Cloning has come a long way since Dolly the sheep, but it still has limits.

How Seaweed May Help Revive Our Oceans
4m 39s
Air Date: 08/18/22

Kelp’s ability to capture carbon from the ocean could help save marine ecosystems.

The Hidden Cause of Traffic Jams—and How to Solve Them
6m 5s
Air Date: 08/18/22

Self-driving vehicles might be the solution for phantom traffic jams.

Sharks Are Showing Up Earlier—and Staying Longer
4m 18s
Air Date: 09/30/22

Tiger sharks are showing up off the coast of New England earlier. What’s going on?

Watch the DART Spacecraft Smash into an Asteroid
51s
Air Date: 10/13/22

Could we deflect an asteroid barreling toward Earth? DART offers a first test.

How Storm Surges Work—and Why They’re So Deadly
4m 49s
Air Date: 10/13/22

The deadliest part of a hurricane isn’t the wind–it’s water.

Why NASA is Going Back to the Moon
4m 53s
Air Date: 10/20/22

NASA’s Artemis I is a big step toward sending humans back to the moon.

Why Experts Say Permanent Daylight Saving Time is Unhealthy
4m 30s
Air Date: 11/08/22

Early morning sunlight is the key to setting our internal clocks.

Oldest DNA Ever Found Reveals Secrets of the Ancient Arctic
4m 3s
Air Date: 12/07/22

Researchers drilled in the Kap København formation in Greenland to collect soil samples.

This Teen Calculates Mind-Boggling Math in Her Head
3m 10s
Air Date: 12/14/22

Apoorva Panidapu earned the moniker “the human calculator” for her math skills.

Scientists Make Breakthrough in Nuclear Fusion
1m 53s
Air Date: 12/14/22

The advancement could help pave the way for new energy sources.

3 Major Space Stories of 2022
4m 6s
Air Date: 12/15/22

In 2023 the exploration continues.

Arctic Sinkholes Preview
S49 Ep1 | 30s
Air Date: 02/02/22

In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate

Portable Homes Help Communities Adapt to Climate Change
S49 Ep1 | 4m 18s
Air Date: 02/08/22

See how one Alaskan community is dealing with the effects of rising Arctic temperatures.

What’s Causing Water to Bubble in the Arctic?
S49 Ep1 | 4m 21s
Air Date: 02/02/22

Scientists look for the source of large bubbles in an Arctic lake.

Secrets in the Scat Preview
S49 Ep2 | 30s
Air Date: 02/09/22

Join biologists on an ingenious hunt for the clues hidden in animal poop.

Can Poop Help Protect Rhinos from Poachers?
S49 Ep2 | 3m 3s
Air Date: 02/09/22

To “scatologists,” a pile of fresh scat in the wild is a treasure trove of information.

Why Wombats Poop Cubes
S49 Ep2 | 3m
Air Date: 03/02/22

Biologists and engineers solve a major marsupial mystery.

Great Mammoth Mystery Preview
S49 Ep3 | 28s
Air Date: 02/16/22

Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.

How Neanderthals Came to Inhabit Northwest Europe
S49 Ep3 | 2m 45s
Air Date: 03/02/22

Stone tools reveal that four species of human have occupied Britain.

The Mammoth Species You’ve Never Heard Of
S49 Ep3 | 3m
Air Date: 02/16/22

These bones could have belonged to some of the last surviving steppe mammoths in Britain.

Augmented Preview
S49 Ep4 | 31s
Air Date: 02/23/22

An ingenious new technology allows prosthetic legs to move and feel like the real thing.

Increasing Access to Brain-Controlled Prosthetics
S49 Ep4 | 2m 55s
Air Date: 03/02/22

Bionic interventions might allow people to one day design their own limbs.

Climbers Tell Story of Mt. Washington Climbing Accident
S49 Ep4 | 5m 10s
Air Date: 02/23/22

Climbing partners have a harrowing experience on Mount Washington in NH.

The Evolution of Prosthetic Leg Technology
S49 Ep4 | 5m 11s
Air Date: 03/15/22

Amputation procedures haven't changed much since the Civil War era.

Determined: Fighting Alzheimer’s Preview
S49 Ep5 | 28s
Air Date: 04/06/22

Follow three women enrolled in a new study to try to prevent Alzheimer’s.

Depression Can Affect Memory—and Mirror Signs of Alzheimer’s
S49 Ep5 | 1m 57s
Air Date: 04/06/22

Exercise may help depression patients regain memory.

How an Alzheimer’s study reached Black communities
S49 Ep5 | 2m 32s
Air Date: 04/06/22

Getting Black individuals involved in a study requires more than just asking them.

Try Passing this Alzheimer’s Screening Test
S49 Ep5 | 2m 54s
Air Date: 04/06/22

You have 10 seconds to memorize six shapes.

Dinosaur Apocalypse: The New Evidence Preview
S49 Ep6 | 29s
Air Date: 05/11/22

Striking new fossils paint a picture of life right before the asteroid impact.

Inside a Fossilized Pterosaur Egg
S49 Ep6 | 2m 58s
Air Date: 05/11/22

Bones and shells can tell us a lot about how these creatures lived.

Watch Scientists Extract a Rare Turtle Fossil
S49 Ep6 | 3m 4s
Air Date: 05/11/22

The Late Cretaceous period was kind of the heyday of turtles.

Dinosaur Apocalypse: The Last Day
S49 Ep7 | 29s
Air Date: 05/11/22

Scientists use new fossils to reconstruct the day the dinosaurs died.

New Fossil May Reveal Clues to Dinosaurs’ Final Days
S49 Ep7 | 2m 44s
Air Date: 05/11/22

This might be the first time in 66 million years that this leg has seen the light of day.

Why Ships Crash Preview
S49 Ep8 | 29s
Air Date: 05/18/22

How could a single ship cause a major supply chain crisis around the globe?

The Crash That Shut Down the Global Economy, Explained
S49 Ep8 | 3m 31s
Air Date: 05/18/22

The Suez Canal is one of the most important shipping lanes in the world.

Ice Age Footprints Preview
S49 Ep9 | 30s
Air Date: 05/25/22

Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.

Humans May Have Lived in North America Earlier Than Thought
S49 Ep9 | 4m 16s
Air Date: 05/25/22

Scattered seeds help reveal when ancient humans first left footprints in North America.

Ultimate Space Telescope Preview
S49 Ep10 | 28s
Air Date: 07/13/22

Discover how NASA engineers built and launched the most ambitious telescope of all time.

How Scientists Created JWST’s First Test Image
S49 Ep10 | 4m 50s
Air Date: 07/13/22

A test image from the James Webb Space Telescope unexpectedly captured many galaxies.

NASA Reacts to the James Webb Space Telescope Images
S49 Ep10 | 1m 55s
Air Date: 07/13/22

This NASA team was the first to see the new James Webb Space Telescope images.

Why Distant Galaxies Look Red
S49 Ep10 | 3m 40s
Air Date: 07/13/22

The farther away a galaxy is, the redder it appears to our telescopes.

Ending HIV in America Preview
S49 Ep11 | 30s
Air Date: 09/21/22

Can innovative drugs and therapies finally end HIV?

How Scientists Developed a Drug to Prevent HIV
S49 Ep11 | 3m 5s
Air Date: 10/13/22

The development of PrEP was a breakthrough in HIV prevention.

Saving Venice Preview
S49 Ep12 | 30s
Air Date: 09/28/22

Can innovative engineering projects save Venice?

How Venice Was Built On a Swamp
S49 Ep12 | 2m 54s
Air Date: 09/28/22

Ever wonder how Venice was built? Here’s how.

This Flood Barrier Could Save Venice
S49 Ep12 | 2m 57s
Air Date: 09/28/22

Venice is sinking. Could flood barriers be the answer?

Rebuilding Notre Dame
S49 Ep13 | 30s
Air Date: 10/05/22

A team tackles the restoration of iconic Notre Dame Cathedral.

Restoring Notre Dame’s Iconic Stained Glass
S49 Ep13 | 3m
Air Date: 10/05/22

Glass experts uncover the South Rose window’s hidden past.

Saving Notre Dame’s Iconic Stone Vaulting
S49 Ep13 | 2m 53s
Air Date: 10/05/22

Geologists attempt to restore limestone at Notre Dame Cathedral after a fire.

Computers v. Crime Preview
S49 Ep14 | 30s
Air Date: 10/12/22

Is artificial intelligence making policing and courts fairer, or is it increasing bias?

How Police Use Algorithms to Predict Crime
S49 Ep14 | 5m 25s
Air Date: 10/17/22

Police are using artificial intelligence to predict crime.

How Computer Algorithms Make Predictions
S49 Ep14 | 2m 30s
Air Date: 10/12/22

Can we rely on them to be fair?

Can Psychedelics Cure? Preview
S49 Ep15 | 30s
Air Date: 10/19/22

Psychedelics are unlocking new ways to treat conditions like addiction and depression.

Psychedelics as Medicine: The History of Peyote
S49 Ep15 | 4m 2s
Air Date: 10/19/22

Indigenous communities use this small psychedelic cactus as a medicinal herb.

How Psychedelics Change the Brain
S49 Ep15 | 4m 11s
Air Date: 10/19/22

Scientists found that psychedelic drugs may change how brain regions talk to each other.

Ocean Invaders
S49 Ep16 | 28s
Air Date: 10/26/22

Meet one of the ocean’s most beautiful and destructive species: Lionfish.

Divers Hunt Venomous Fish Invading Our Oceans
S49 Ep16 | 3m
Air Date: 10/26/22

Divers help turn the lionfish’s Atlantic invasion into a commercial opportunity.

Cats Might Be One of the Most Invasive Species
S49 Ep16 | 2m 12s
Air Date: 10/26/22

Cats are responsible for hundreds of millions, if not billions of birds being eaten every

Nazca Desert Mystery Preview
S49 Ep17 | 27s
Air Date: 11/02/22

Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.

Who Carved These Mysterious Lines in the Desert?
S49 Ep17 | 6m 57s
Air Date: 11/02/22

Learn more about the ancient Nazca people and their ancestors, the Paracas.

Artificial Intelligence Reveals Ancient Desert Drawings
S49 Ep17 | 4m 25s
Air Date: 11/02/22

Can AI help archaeologists uncover more Nazca geoglyphs?

Crypto Decoded Preview
S49 Ep18 | 30s
Air Date: 11/09/22

What exactly is crypto, and how does it work? This technology is more than just money.

The History of Crypto Goes Further Back Than You Think
S49 Ep18 | 10m 2s
Air Date: 11/09/22

Computer scientists and digital rebels built the revolutionary crypto system.

How the NFT Was Invented
S49 Ep18 | 3m 30s
Air Date: 11/09/22

An artist and a tech entrepreneur invented the non-fungible token, or NFT, in 24 hours.

Zero to Infinity Preview
S49 Ep19 | 28s
Air Date: 11/16/22

Discover how the concepts of zero and infinity revolutionized mathematics.

The Area of a Circle, Explained with Pizza
S49 Ep19 | 4m 23s
Air Date: 11/16/22

Finding the area of a circle is easy with pizza and infinity.

Thought Experiment: The Infinite Hilbert’s Hotel
S49 Ep19 | 4m 9s
Air Date: 11/16/22

At the Hilbert’s Hotel, there’s always room for one more.

This University Monitors COVID-19 Through Saliva Testing
6m 53s
Air Date: 01/15/21

The University of Illinois is trying to control the spread of COVID-19 by collecting spit.

Lingering Symptoms from COVID-19 are “Unprecedented”
5m 5s
Air Date: 02/04/21

Could an out-of-order immune system be to blame?

New COVID-19 Variants Spread More Easily
7m 15s
Air Date: 02/04/21

Why are the new coronavirus variants making COVID-19 more transmissible?

Why Misinformation Matters
2m 41s
Air Date: 02/11/21

The spread of misinformation is influencing human behavior.

Dream Hacking: Decisions, Addictions, and Sleep
14m 34s
Air Date: 02/18/21

Watch the first-ever video documenting this live two-way dream communication.

How Mask-Wearing Misinformation Became a Reality
5m 38s
Air Date: 02/23/21

There are various reasons why people believe in misinformation.

The Big Lie about Monarch Butterflies
9m 25s
Air Date: 03/15/21

Join NOVA producer Arlo Pérez as he unlearns a “fact” he was taught as a child.

Origins of Misinformation and How it Spreads
5m 47s
Air Date: 03/15/21

We're vulnerable to sharing misinformation because of the way that we communicate.

Texas’ Power Grid Trouble is Far From Over
8m 23s
Air Date: 03/20/21

Why it means we need to rethink our aging energy infrastructure throughout the U.S.

GameStop, Reddit, and the Rise of Risky Trades
8m 35s
Air Date: 04/27/21

Investing in stock call options is extremely risky.

Mexico’s COVID Cases and Deaths are Underreported—Why?
7m 42s
Air Date: 04/16/21

Learn more about the COVID pandemic in Mexico.

Are You Feeding a Powerful Facial Recognition Algorithm?
6m 55s
Air Date: 04/30/21

This algorithm isn't looking for your face only in the photos you've posted.

The Coronavirus Pandemic’s Toll on Mental Health
6m 6s
Air Date: 05/07/21

We should treat mental health with the same sense of urgency as the COVID pandemic.

Sciencing Out: Making Science Accessible and Engaging
9m 25s
Air Date: 05/19/21

For centuries, women all around the world have educated the public about science.

Sciencing Out: How Trust in Medicine and Science is Built
14m 11s
Air Date: 05/28/21

Trust can be a delicate matter—especially when it’s related to science and medicine.

How to Make Birdwatching More Inclusive
3m 7s
Air Date: 06/07/21

Step One: Start paying attention to the birds in your area.

Sciencing Out: What it Means to Make Information Tangible
14m 22s
Air Date: 06/07/21

There are experts whose job it is to make numbers tangible and help us visualize data.

The Science of Exercise—and Getting Back in the Game
30m 1s
Air Date: 06/25/21

What happens to the bodies and minds of athletes when training is put on hold?

Fact or CAP? How to Deal With Clickbait
7m 7s
Air Date: 06/28/21

Watch out for clickbait that’s designed to spread misinformation.

Can Humans Deflect an Asteroid?
6m 12s
Air Date: 06/28/21

Asteroid impacts on Earth don't happen very often—but they do happen.

Can Solar Storms Knock Out Our Power Grid?
6m 55s
Air Date: 06/28/21

Aurora is the beautiful result of space weather.

Preparing for the Pacific Northwest’s Next Major Earthquake
6m 12s
Air Date: 06/30/21

The Pacific Northwest is due for a major earthquake.

How California’s Droughts Lead to Other Disasters
5m 54s
Air Date: 06/30/21

Wildfires, heat waves, flooding, and water shortages are on the rise.

Using Technology to Cope With Drought
28m
Air Date: 07/12/21

The U.S. is experiencing increasingly worse drought conditions.

How COVID-19 and Climate Change Affect Breathing
4m 13s
Air Date: 08/02/21

COVID insidiously impacts a man's lungs — giving him reasons to appreciate each breath.

The Science of Unidentified Aerial Phenomena
28m 7s
Air Date: 07/23/21

Ever spotted a strange object in the sky?

Toxic “Forever Chemicals” Found in Americans’ Blood
6m 50s
Air Date: 08/04/21

Learn how they earn the "forever" label.

What will it take to get out of this pandemic?
28m 19s
Air Date: 08/06/21

COVID-19​​ infection continues to spread rapidly across most of the world.

How Wildfires and Ozone Led to Terrible Air Quality
6m 5s
Air Date: 09/08/21

Here’s how poor air quality can lead to serious health effects.

NOVA Universe Revealed Series Teaser
1m
Air Date: 10/27/21

Take a ringside seat as NOVA captures moments of high drama when the cosmos changed.

Lights Flashed in the Sky During Mexico’s Latest Earthquake
4m 40s
Air Date: 09/24/21

On September 7, 2021, a magnitude 7.0 earthquake rocked southwest Mexico.

Genetically Modifying Mosquitoes to Reduce their Numbers
5m 42s
Air Date: 09/24/21

Mosquitoes can be annoying, but how far would we go to stop them?

Can this Cuttlefish Pass an Intelligence Test?
9m 51s
Air Date: 10/18/21

Witness a hungry cuttlefish take part in an oddly adorable, psychological test.

How Does a Brain on THC Compare to a Brain on CBD?
4m 30s
Air Date: 10/25/21

Scientists are working to understand the true effects of cannabis on the brain.

Georgia’s First Black-Owned Hemp Farm
3m 32s
Air Date: 11/01/21

The legal definition of hemp is a cannabis plant that has no more than 0.3% of THC.

How Long Does Covid-19 Immunity Last?
8m 43s
Air Date: 11/09/21

How your immune system is primed may impact your long-term immunity.

The Link Between High-Potency Cannabis Use and Psychosis
4m 42s
Air Date: 12/01/21

As cannabis becomes more mainstream, use may come with a mental health risk.

Could a “Dune” Sandworm Exist in Real Life?
7m 7s
Air Date: 12/01/21

There are ecological and evolutionary limits to consider.

Where Did the Cannabis Plant Come From?
4m 10s
Air Date: 12/15/21

What cannabis DNA can reveal about the plant’s evolution.

What will the James Webb Space Telescope do?
5m 44s
Air Date: 01/03/22

This telescope could revolutionize our understanding of the universe.

Meet the Marvelous Christmas Tree Worm
5m 20s
Air Date: 01/03/22

This festive-sounding relative to earthworms might help protect coral reefs.

Why is There a Global Chip Shortage?
5m 15s
Air Date: 01/03/22

The pandemic made computer chip supply chain issues even worse.

Secrets in our DNA Preview
S48 Ep1 | 27s
Air Date: 01/13/21

What can DNA testing companies reveal about our ancestry and health, and at what risk?

Half Sisters Unite Thanks to DNA Testing
S48 Ep1 | 4m 19s
Air Date: 01/13/21

In 2018, June Smith takes a consumer DNA test, hoping to solve a longstanding mystery.

How—and why—DNA Testing Uses Biased Reference Databases
S48 Ep1 | 5m 20s
Air Date: 01/13/21

Are DNA ancestry tests equally accurate for all test takers?

Looking for Life on Mars Preview
S48 Ep2 | 30s
Air Date: 02/24/21

NASA launches its most ambitious search yet for traces of ancient life on Mars.

Why NASA is Back on Mars
S48 Ep2 | 5m 10s
Air Date: 02/24/21

NASA's Perseverance rover and the first-ever space helicopter landed on Mars.

This NASA Scientist Helps Prevent Mars from Contamination
S48 Ep2 | 4m 58s
Air Date: 02/24/21

How do you keep Earth microbes from contaminating Mars?

Feast Your Eyes on the First-Ever Mars 2020 Mission Videos
S48 Ep2 | 4m 31s
Air Date: 02/24/21

Watch amazing high-definition footage of the Perseverance landing.

Picture a Scientist Preview
S48 Ep3 | 29s
Air Date: 04/14/21

Researchers expose longstanding discrimination against women in science.

Why People Struggle to Associate Women with Science Words
S48 Ep3 | 3m 53s
Air Date: 05/19/21

The idea is that we associate two things that have something in common.

The Unique Challenges of Being a Black Woman in STEM
S48 Ep3 | 3m 7s
Air Date: 05/19/21

In academia, women of color suffer different types of abuse from different people.

Visualizing Discrimination and Harassment of Women in STEM
S48 Ep3 | 2m 24s
Air Date: 05/19/21

About half of of women faculty and staff experience sexual harassment.

Reef Rescue Preview
S48 Ep4 | 28s
Air Date: 04/21/21

Scientists race to help corals adapt to warming oceans through assisted evolution.

Scientists Breed a New Generation of “Super Corals”
S48 Ep4 | 4m 45s
Air Date: 04/21/21

Coral reefs are in crisis as ocean heatwaves are draining them of life.

Fighting for Fertility Preview
S48 Ep5 | 28s
Air Date: 05/12/21

Meet people struggling with infertility and the challenges of assisted reproduction.

To Start a Family, This Woman Turned to Egg Freezing
S48 Ep5 | 7m 34s
Air Date: 05/12/21

A woman is born with over a million eggs, but only 10% remain by the time she's 30.

How Weathering Affects Black Women’s Fertility
S48 Ep5 | 4m 54s
Air Date: 05/12/21

Generations of stress impact Black women on their journey to motherhood.

Building a Family as a Transgender Person
S48 Ep5 | 5m 41s
Air Date: 05/12/21

LGBTQ+ couples face many hurdles to biological reproduction.

A Woman’s Journey with Infertility and Adoption
S48 Ep5 | 1m 52s
Air Date: 05/28/21

African American women experience more fertility troubles than any other group.

Hindenburg: The New Evidence Preview
S48 Ep6 | 30s
Air Date: 05/19/21

A revealing new investigation of one of history’s most iconic aviation disasters.

Newly Analyzed Footage Helps Solve Hindenburg Mystery
S48 Ep6 | 6m 45s
Air Date: 05/19/21

A new piece of the Hindenburg puzzle has surfaced.

Great Electric Airplane Race Preview
S48 Ep7 | 29s
Air Date: 05/26/21

Will electric planes replace polluting airliners and lead to flying taxis in our cities?

You Could Take a Flying Car to Work Someday
S48 Ep7 | 5m 23s
Air Date: 05/26/21

Autonomous air taxies are closer to becoming a reality.

High-Risk High-Rise Preview
S48 Ep8 | 30s
Air Date: 01/05/22

Can skyscrapers be made safer, more efficient, and livable in our rapidly growing cities?

When Earthquake Damage is Invisible
S48 Ep8 | 2m 51s
Air Date: 01/05/22

Factors such as inadequate construction materials can make tall buildings vulnerable.

Stopping the Millennium Tower from Sinking Further
S48 Ep8 | 3m 28s
Air Date: 01/05/22

How can skyscrapers be built safely without a foundation on bedrock?

Ship That Changed the World Preview
S48 Ep9 | 29s
Air Date: 06/02/21

As we excavate a 500-year-old wreck, learn the secrets behind history’s great ships.

Mysterious Bones Found in 500-Year-Old Shipwreck
S48 Ep9 | 3m 3s
Air Date: 06/02/21

Sometimes archaeology can reveal things that written sources can't.

Bat Superpowers Preview
S48 Ep10 | 30s
Air Date: 09/15/21

Could the source of the deadliest viruses hold the secret to a healthier and longer life?

Why are Bats Tolerant of the Diseases They Carry?
S48 Ep10 | 2m 34s
Air Date: 09/15/21

Viruses circulate so well within bat colonies — could they hold secrets to better health?

Unique Adaptations may Explain Bats’ Resistance to Viruses
S48 Ep10 | 3m 2s
Air Date: 09/15/21

Bats are really effective at dumping heat to keep their body temperatures fairly normal.

The Cannabis Question Preview
S48 Ep11 | 30s
Air Date: 09/29/21

As state-legalized cannabis spreads, NOVA explores its little-known risks and benefits.

What is the Endocannabinoid System?
S48 Ep11 | 3m 49s
Air Date: 09/29/21

Cannabinoid receptors, named after cannabis, are found in nearly every organ in the body.

A Veteran’s Story of Medical Cannabis Use and Arrest
S48 Ep11 | 5m 34s
Air Date: 09/29/21

For Black people in America, the war on cannabis is still ongoing.

How Some Parents Brought CBD to Market to Treat Epilepsy
S48 Ep11 | 7m 1s
Air Date: 09/29/21

About a third of epilepsy patients don't respond to medication.

How Cannabis Affects Teens’ Brains
S48 Ep11 | 3m 28s
Air Date: 09/29/21

Our natural endocannabinoids reach their highest levels as the brain develops.

Cannabis Reverses Brain Aging in Mice
S48 Ep11 | 3m 51s
Air Date: 09/29/21

Low doses of THC from cannabis can help older mice learn faster, researchers found.

Incarcerated for Cannabis: Who’s Still in Prison and Why?
S48 Ep11 | 3m 54s
Air Date: 09/29/21

Many states have legalized cannabis for medical use, but thousands are still in prison.

CBD Helps Anxiety Patients in a Clinical Trial
S48 Ep11 | 3m 4s
Air Date: 09/29/21

Unlike THC, CBD is not psychoactive and not known to be intoxicating.

Why is Researching Cannabis so Hard?
S48 Ep11 | 3m 39s
Air Date: 09/29/21

Here's how approved research is conducted on cannabis.

Particles Unknown Preview
S48 Ep12 | 30s
Air Date: 10/06/21

Join the hunt for the universe’s most common—yet most elusive and baffling—particle.

This Detector Can Catch Cosmic Neutrinos
S48 Ep12 | 3m 20s
Air Date: 10/13/21

Neutrinos could help unlock one of the biggest mysteries in physics today.

Arctic Drift Preview
S48 Ep13 | 30s
Air Date: 10/13/21

Join scientists on a daring polar voyage to uncover the Arctic’s climate secrets.

MOSAiC Scientists Measure Arctic Sea Ice Volume
S48 Ep13 | 3m 5s
Air Date: 10/13/21

Just how much ice is in the Arctic Ocean?

The Arctic Jet Stream Affects Global Climate. Here’s Why.
S48 Ep13 | 3m 3s
Air Date: 10/13/21

The jet stream is a band of wind that influences weather in the northern hemisphere.

Edible Insects Promo
S48 Ep14 | 29s
Air Date: 10/20/21

Take a tasty look at insect foods that could benefit our health and our warming planet.

Insects Make Protein More Efficiently Than Mammals
S48 Ep14 | 5m 14s
Air Date: 10/20/21

Most of the calories insects eat can be converted into nutrients that we can then eat.

Was Eating Insects Key to Human Brain Evolution?
S48 Ep14 | 3m 32s
Air Date: 10/20/21

Insects may have provided humans' ancestors with key nutrients.

NOVA Universe Revealed: Age of Stars Preview
S48 Ep15 | 30s
Air Date: 10/27/21

Voyage to discover the sun’s place in a grand cycle of birth, death and renewal.

How a Star Dies in a Supernova
S48 Ep15 | 2m 48s
Air Date: 10/27/21

The saying "live fast, die young" applies to stars, astrophysicist Grant Tremblay says.

Will the Universe’s Stars Someday Disappear?
S48 Ep15 | 2m 42s
Air Date: 10/27/21

The age of stars is not as enduring as it might seem.

NOVA Universe Revealed: Milky Way Preview
S48 Ep16 | 30s
Air Date: 11/03/21

Explore the wonders and mysteries of our galaxy—the giant city of stars we call home.

The Milky Way and Andromeda Galaxies will Someday Collide
S48 Ep16 | 2m 56s
Air Date: 11/03/21

The Milky Way as we know it today is not eternal.

Gaze at Galaxies with NASA’s Hubble Space Telescope
S48 Ep16 | 2m 44s
Air Date: 11/03/21

The Hubble Space Telescope has revolutionized our understanding of the universe.

NOVA Universe Revealed: Alien Worlds Preview
S48 Ep17 | 30s
Air Date: 11/10/21

Visit exotic worlds orbiting distant suns as NOVA tackles the big question: are we alone?

Yes, There’s Really a Frozen Exoplanet named Hoth
S48 Ep17 | 3m 7s
Air Date: 11/10/21

No one predicted that planets like this were even possible.

In Galaxies Far, Far Away, Some Planets Have Two Stars
S48 Ep17 | 2m 38s
Air Date: 12/06/21

What would life be like in a binary star system?

NOVA Universe Revealed: Black Holes Preview
S48 Ep18 | 30s
Air Date: 11/17/21

Take a seat on the ultimate thrill ride as NOVA explores the universe’s strangest objects.

Sagittarius A*: The Void at the Center of our Galaxy
S48 Ep18 | 1m 54s
Air Date: 11/17/21

Scientists believe a giant black hole sits at the center of our galaxy.

Take a Ride into a Supermassive Black Hole
S48 Ep18 | 2m 41s
Air Date: 12/03/21

Black holes distort the space-time fabric.

NOVA Universe Revealed: Big Bang Preview
S48 Ep19 | 30s
Air Date: 11/24/21

Venture back to the birth of space and time as NOVA probes the mystery of the Big Bang.

Scientists Capture the First Light from the Big Bang
S48 Ep19 | 2m 57s
Air Date: 12/06/21

Scientists now have a detailed image of the entire universe in its infancy.

Was the Big Bang an Explosion or Something Else?
S48 Ep19 | 3m 1s
Air Date: 11/24/21

Energy transformed into matter during the Big Bang.

Butterfly Blueprints Preview
S48 Ep20 | 29s
Air Date: 01/12/22

Explore how the scientific secrets of butterflies are inspiring technological innovations.

How the Morpho Butterfly Gets its Iridescent Color
S48 Ep20 | 2m 22s
Air Date: 01/12/22

How does nature produce a color that looks so unnatural?

How Did This Butterfly Get So Old?
S48 Ep20 | 2m 56s
Air Date: 01/12/22

A special diet could be the secret to its exceptional longevity.

Alaskan Dinosaurs Preview
S48 Ep21 | 29s
Air Date: 01/19/22

Intrepid paleontologists discover that dinosaurs thrived in the Arctic’s cold and dark.

Fossilized Dung Reveals Clues About Dinosaurs’ Diet
S48 Ep21 | 3m 6s
Air Date: 01/19/22

Where are you going to get protein if you're an herbivore?

Did Some Dinosaurs Breed in the Arctic?
S48 Ep21 | 3m
Air Date: 01/19/22

70 million years ago, several species of dinosaur nested in the Arctic.

Ancient Maya Metropolis Preview
S48 Ep22 | 30s
Air Date: 01/26/22

Explore great ancient Maya cities and why their inhabitants abandoned them.

LIDAR Technology Helps Uncover a Maya Metropolis
S48 Ep22 | 3m 9s
Air Date: 02/08/22

Light Detection and Ranging, LIDAR, sees through the jungle to reveal what lies beneath.

These Artifacts and Foods Tie Modern Maya to the Past
S48 Ep22 | 4m 4s
Air Date: 01/26/22

Oral tradition talks about the importance of these foods for Maya.

The Joys and Challenges of Birding While Black
3m 54s
Air Date: 09/03/20

A need for inclusion in outdoor spaces remains, Christian Cooper explains.

Three Solutions That Can Slow or Stop Climate Change
4m 21s
Air Date: 06/04/20

Preventing, “undoing,” and adapting are 3 ways to avoid the worst climate change impacts.

Cutting our Greenhouse Gas Emissions to Zero
4m 52s
Air Date: 06/19/20

Through “prevention,” humans can significantly cut greenhouse gas emissions.

Can Geoengineering “Undo” Climate Change?
4m 41s
Air Date: 06/24/20

There are ways to reverse some of the damage from our carbon dioxide emissions.

How Communities Can Adapt to Climate Change
3m 59s
Air Date: 06/29/20

For many, the concept of “adapting” to climate change feels like admitting defeat.

Losing a Loved One to Early Onset Alzheimer’s
4m 53s
Air Date: 09/02/20

See how Alzheimer's develops and spreads throughout the brain.

Signs of Life Found on Venus
6m 4s
Air Date: 09/21/20

Could this mean there's life in our planetary neighbor's clouds?

How Anosmia Could Affect Doctors’ Coronavirus Screenings
5m 14s
Air Date: 09/23/20

Many people have smell loss with COVID-19.

Christian Cooper’s Bird Yearbook Superlatives
5m 11s
Air Date: 09/29/20

What’s the most underrated bird? Most mysterious? Hear Chris Cooper’s opinion.

The Tech Behind Mail-In Voting
6m 20s
Air Date: 10/28/20

Due to the pandemic, millions are voting by mail in the 2020 presidential election.

The Science of the COVID-19 Treatments Trump Received
6m 37s
Air Date: 11/02/20

In early October 2020, President Trump tested positive for COVID-19.

Is it Safe to Fly During the Pandemic?
6m 14s
Air Date: 12/08/20

If you do have to fly, here's what to expect.

Your COVID-19 Vaccine is Coming
7m 12s
Air Date: 12/17/20

Learn more about the first coronavirus vaccines.

The Biggest Space News Stories of 2020
5m 27s
Air Date: 01/15/21

Discover three of the greatest space developments of the year and what 2021 may bring.

Polar Extremes Preview
S47 Ep1 | 3m 19s
Air Date: 02/05/20

Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.

What if Carbon Left Your Tailpipe as Solid Chunks?
S47 Ep1 | 2m 12s
Air Date: 02/05/20

Together, all the cars on Earth would leave quite the pile of carbon behind—every day.

Plant Fossils Hint at Arctic’s Swampy Past
S47 Ep1 | 3m 2s
Air Date: 02/05/20

Learn more about a lush forest that once dominated the Arctic.

Why Trees Are Living Climate Records
S47 Ep1 | 1m 29s
Air Date: 02/03/20

Trees have an environmental record etched into their very wood.

What did the East Coast Look Like 3 Million Years Ago?
S47 Ep1 | 3m 21s
Air Date: 02/05/20

Scientists dig up ancient clams from the ocean 90 miles from the nearest beach.

Fifty Million Years Ago, the Arctic Was a Warm Swamp
S47 Ep1 | 2m 7s
Air Date: 02/05/20

Drop yourself into a modern-day swamp, and that's what the ancient Arctic looked like.

How Carbon Dioxide Warms Planet Earth
S47 Ep1 | 2m 32s
Air Date: 02/05/20

Carbon dioxide acts like a heat-trapping blanket, warming our planet.

A Bird’s-Eye View of Carbon Emissions
S47 Ep1 | 1m 56s
Air Date: 02/05/20

What if carbon dioxide pollution were solid carbon chunks?

What’s Causing Greenland’s Biggest Glacier to Melt?
S47 Ep1 | 2m 4s
Air Date: 02/05/20

Warming ocean water is eating away at Greenland's glaciers from below.

This Alaska Community is Losing Sea Ice to Climate Change
S47 Ep1 | 4m 47s
Air Date: 02/05/20

See how one small town’s survival is threatened by climate change.

How Earth’s Climate Changed Over the Past 500 Million Years
S47 Ep1 | 3m 25s
Air Date: 02/05/20

Learn more about our planet’s Hothouse and Icehouse climates.

This Canadian Cave Has Been Frozen Since the Last Ice Age
S47 Ep1 | 3m 11s
Air Date: 02/05/20

Explore this spectacular, icy cave.

How Climate Has Shifted Over Millions of Years
S47 Ep1 | 2m 44s
Air Date: 02/05/20

Lake mud from the Russian Arctic tells us that Earth's climate has oscillated in the past.

How Humans Could Make Icehouse Earth into a Hothouse
S47 Ep1 | 4m 21s
Air Date: 02/05/20

Understand climate time.

Dog Tales Preview
S47 Ep2 | 26s
Air Date: 02/12/20

Follow the epic journey of dog domestication and see what science says about dogs’ love.

Do Dogs Love Us or do They Just Want Treats?
S47 Ep2 | 3m 59s
Air Date: 02/12/20

It's time to learn the truth once and for all.

Can Bones Reveal How Dogs Evolved from Wolves?
S47 Ep2 | 5m 12s
Air Date: 02/12/20

Learn more about the evolution of our furry companions.

Cat Tales Preview
S47 Ep3 | 28s
Air Date: 02/19/20

Goddess, demon, house pet? What does science say about the human relationship with cats?

Are Cats More Expressive Than We Think?
S47 Ep3 | 2m 51s
Air Date: 02/19/20

Why it’s so hard to tell what your cat is thinking.

Are Cats As Easy to Train as Dogs?
S47 Ep3 | 2m 19s
Air Date: 02/19/20

Tips on how to train your cat.

Mysteries of Sleep Preview
S47 Ep4 | 27s
Air Date: 02/26/20

Why do we sleep? And what does sleep have to do with memory, trauma, and our emotions?

Can Sleep Quality and Quantity be Boosted Using Sound?
S47 Ep4 | 3m 3s
Air Date: 02/26/20

Scientists use sound to improve sleep.

How Sleep Helps Children Learn and Remember New Words
S47 Ep4 | 4m 22s
Air Date: 02/26/20

See how sleep helps children try to learn made-up words.

Cuba’s Cancer Hope Preview
S47 Ep5 | 28s
Air Date: 04/01/20

Can Cuba's innovative lung cancer vaccines give new hope to patients across the world?

An American Cancer Patient Receives Treatment in Cuba
S47 Ep5 | 4m 51s
Air Date: 04/01/20

Cuban lung cancer vaccines offer new hope.

How the Immune System Fights Cancer
S47 Ep5 | 2m 49s
Air Date: 04/01/20

The battle begins as soon as healthy cells mutate into cancer cells.

The Truth About Fat Prologue
S47 Ep6 | 1m 59s
Air Date: 04/08/20

Could it be that body fat has more to do with biological processes than personal choices?

The Truth About Fat Preview
S47 Ep6 | 28s
Air Date: 04/08/20

Could it be that body fat has more to do with biological processes than personal choices?

How Do Sumo Wrestlers Avoid Obesity-Related Diseases?
S47 Ep6 | 2m 51s
Air Date: 04/08/20

It has to do with where the fat is distributed in their bodies.

How the Hormone Leptin Helps Regulate Appetite
S47 Ep6 | 6m 48s
Air Date: 04/08/20

The discovery of leptin transformed our view of fat.

Eagle Power Preview
S47 Ep7 | 28s
Air Date: 05/20/20

Follow eagles from the nest to the skies to see what makes these predators so remarkable.

Watch Baby Eagles Hatch and Grow
S47 Ep7 | 4m 7s
Air Date: 05/20/20

It takes 37 days for eagle eggs to incubate.

How Sharp are an Eagle’s Eyes?
S47 Ep7 | 2m 45s
Air Date: 05/20/20

Learn why eagles have the sharpest eyesight of any vertebrate animal.

Saving Notre Dame Preview
S47 Ep8 | 28s
Air Date: 11/25/20

Scientists and engineers fight to save Notre Dame Cathedral after the 2019 fire.

Stabilizing Notre Dame’s Famous Buttresses
S47 Ep8 | 3m 3s
Air Date: 11/25/20

If the vaulting collapses, the weight of the buttresses will push in the 100-foot walls.

Saving Notre Dame’s Stained Glass Masterpieces
S47 Ep8 | 3m 2s
Air Date: 11/25/20

Could the cathedral's beautiful stained glass collection survive the 2019 fire intact?

Repairing Notre Dame’s Vaults with Underground Quarries
S47 Ep8 | 2m 51s
Air Date: 11/25/20

Hidden under Paris is a rich source of limestone, a vast labyrinth of quarry tunnels.

Nature’s Fear Factor Preview
S47 Ep9 | 27s
Air Date: 10/14/20

Can bringing predators—and fear—back into an ecosystem help restore its natural balance?

Meet Gorongosa National Park’s Head Veterinarian
S47 Ep9 | 8m 18s
Air Date: 10/14/20

Hear what it’s like to be a vet for wild animals.

The Anatomy of an African Wild Dog Hunt
S47 Ep9 | 6m 50s
Air Date: 10/14/20

Lions and African wild dogs hunt their prey very differently.

Lions Return to Mozambique’s Gorongosa National Park
S47 Ep9 | 6m
Air Date: 10/14/20

Gorongosa National Park was once one of the most species-rich places in Africa.

What We Know and Don’t Know about the Coronavirus
S47 Ep10 | 5m 55s
Air Date: 03/09/20

What is covid-19 and should you be worried?

How Coronavirus Tests Work
S47 Ep10 | 6m 46s
Air Date: 03/27/20

Learn the science behind the tests.

Can Scientists Use RNA to Create a Coronavirus Vaccine?
S47 Ep10 | 5m 28s
Air Date: 04/16/20

The coronavirus has unleashed global havoc. Learn how scientists are hitting back.

Decoding COVID-19 Preview
S47 Ep10 | 26s
Air Date: 05/20/20

Scientists race to understand and defeat the coronavirus behind the COVID-19 pandemic.

When You Lose a Loved One to Coronavirus
S47 Ep10 | 6m 36s
Air Date: 05/13/20

Hear George’s family recount his tragic story.

How Viruses Like the Novel Coronavirus Evolve
S47 Ep10 | 2m 53s
Air Date: 05/13/20

The virus likely is not a new entity on Earth, but it is new in humans.

How Wuhan is Using Digital Gatekeeping to Reopen
S47 Ep10 | 2m 47s
Air Date: 05/13/20

To reopen the city, Wuhan, China is using digital gatekeeping to contact trace. Here’s how

Why Antibody Tests Don’t Yet Reveal Coronavirus Immunity
S47 Ep10 | 5m 59s
Air Date: 05/13/20

Can an antibody blood test tell if you are immune to COVID-19?

Human Nature Preview
S47 Ep11 | 28s
Air Date: 09/09/20

We can now edit the human genome with a tool called CRISPR. But how far should we go?

Human Nature Sneak Peek
S47 Ep11 | 2m 8s
Air Date: 09/09/20

We can now edit the human genome with a tool called CRISPR. But how far should we go?

CRISPR Gene-Editing Reality Check
S47 Ep11 | 19m 13s
Air Date: 09/04/20 | Rating: TV-PG

CRISPR gene-editing technology is advancing quickly. What can it do now—and in the future?

Living with Sickle Cell Anemia
S47 Ep11 | 3m 22s
Air Date: 09/09/20

Sickle Cell Anemia is caused by a single change in the DNA sequence.

How CRISPR Works in Nature
S47 Ep11 | 3m 24s
Air Date: 05/13/20

CRISPR is part of bacteria's natural defense against viruses.

The “Holy Grail of Yogurt” is CRISPR
S47 Ep11 | 4m 1s
Air Date: 09/09/20

Five years before anybody was talking about CRISPR, Danisco had a breakthrough.

Secret Mind of Slime Preview
S47 Ep12 | 27s
Air Date: 09/16/20

Meet slime molds: the brainless blobs that can learn, make decisions, and navigate mazes.

Brainless Slime Molds Navigate Mazes and Make Decisions
S47 Ep12 | 2m 46s
Air Date: 09/16/20

Can a slime mold find food placed at the far end of a labyrinth?

The Great Australian Slime Mold Bakeoff
S47 Ep12 | 3m
Air Date: 09/16/20

The purpose of this experiment was to see how Physarum regulates its nutritional needs.

A to Z: The First Alphabet Preview
S47 Ep13 | 27s
Air Date: 09/23/20

The birth of writing and the first alphabet were among the world’s most vital inventions.

Aboriginal Elder Sings Ancient Creation Song
S47 Ep13 | 4m 4s
Air Date: 09/23/20

In the Wardaman Creation Story, all the plants and animals of the world were once people.

How Egyptian Hieroglyphs Influenced Modern Alphabets
S47 Ep13 | 3m 56s
Air Date: 09/23/20

Learn why Egyptian hieroglyphs are hiding in modern alphabets—and how to find them.

A to Z: How Writing Changed the World Promo
S47 Ep14 | 26s
Air Date: 09/30/20

The creation of printing, the first information technology, drove empires and revolutions.

The Printing Press Revolutionized the Spread of Information
S47 Ep14 | 2m 36s
Air Date: 09/30/20

Watch how a printing press works.

How Medieval Parchment is Made
S47 Ep14 | 3m 4s
Air Date: 09/30/20

Learn about the preparation and use of parchment paper in medieval Europe.

Touching the Asteroid Promo
S47 Ep15 | 27s
Air Date: 09/15/20

Spacecraft OSIRIS-REx attempts to grab a piece of an asteroid to bring it back to Earth.

Did This Asteroid Just Turn into a Comet?
S47 Ep15 | 4m 24s
Air Date: 10/21/20

Everything in the solar system is dynamic—you can watch it evolve in real time.

Asteroids Provide Hints About the “Ingredients” in Planets
S47 Ep15 | 4m 30s
Air Date: 10/21/20

By studying asteroids, researchers can learn about the formation of planets.

Inside OSIRIS-REx’s Mission to Tag Asteroid Bennu
S47 Ep15 | 4m 38s
Air Date: 10/21/20

Learn more about OSIRIS-REx’s mission to an asteroid 200 million miles away.

Can We Cool the Planet? Promo
S47 Ep16 | 28s
Air Date: 10/28/20

Scientists look to geoengineering and other methods to cool the planet.

How Much Coal Do People Burn Each Year?
S47 Ep16 | 2m 13s
Air Date: 10/28/20

See how much CO2 we add to the atmosphere each year.

What is Solar Geoengineering and Why is it Controversial?
S47 Ep16 | 4m 16s
Air Date: 10/28/20

Solar geoengineering is like drawing a curtain over the face of the Earth.

Meet the NASA Scientist Who Uses Lasers to Study Forests
S47 Ep16 | 4m 5s
Air Date: 10/28/20

This researcher shoots lasers at trees in order to measure how much carbon forests store.

Beyond the Elements: Reactions Preview
S47 Ep17 | 30s
Air Date: 02/03/21

Discover the fascinating chemistry that makes our world and everything in it—including us.

What Gives Hot Peppers Their Heat?
S47 Ep17 | 8m 22s
Air Date: 02/03/21

"Beyond the Elements" host David Pogue explores the science of hot peppers—viscerally.

How Killer Snail Venom Plays a Key Role in Drug Development
S47 Ep17 | 6m 8s
Air Date: 02/03/21

What’s in this snail’s paralyzing venom?

Yes, Molecules Do Make Sounds
S47 Ep17 | 4m 49s
Air Date: 05/26/21

In the atomic world, everything is in motion, vibrating because of thermal energy.

Beyond the Elements: Indestructible Preview
S47 Ep18 | 30s
Air Date: 02/10/21

Discover the fascinating chemistry that makes our world and everything in it—including us.

Plastics: Durable, Diverse, and Indestructible
S47 Ep18 | 7m 52s
Air Date: 02/10/21

Processing can turn the same plastic into very different products.

Beyond the Elements: Life Preview
S47 Ep19 | 30s
Air Date: 02/17/21

Discover the fascinating chemistry that makes our world and everything in it—including us.

Growing Simple Cells with the Help of… Soap?
S47 Ep19 | 7m 11s
Air Date: 02/17/21

To jumpstart evolution, a scientist shows, just add soap.

How Does a Government Shutdown Affect Science?
3m 1s
Air Date: 01/23/19

The government shutdown has brought experiments to a halt and affected other areas.

Five Moon Names to Know for Successful Moongazing
2m 6s
Air Date: 01/23/19

What's the meaning behind moon names?

AI Helps Young Man with Cerebral Palsy Find Independence
4m 46s
Air Date: 01/31/19

Can AI technology help 12-year-old Kaden, who is nonverbal, find his voice?

What Does the Polar Vortex Have to do With Climate Change?
3m 18s
Air Date: 02/01/19

If you think you understand the polar vortex, think again.

Why Kicking a Field Goal is Harder Than it Looks
3m 28s
Air Date: 02/06/19

Kicking a field goal is tough. But why? (Hint: It's physics.)

What is Coral Bleaching?
2m 29s
Air Date: 02/20/19

It changes the dynamic of the entire reefscape, and can be detrimental to corals.

Can Super Corals Save Reefs?
3m 29s
Air Date: 02/21/19

Scientists are trying to help reefs around the world the world by identifying super corals

Did Climate Change Cause Hurricane Harvey?
2m 32s
Air Date: 02/21/19

Climate models can be used to analyze rainfall, heatwaves, and even coral bleaching events

Climate Change Flooding: A Threat to National Security?
4m 1s
Air Date: 02/21/19

Sea level rise and heavy rains pose logistical challenges to Norfolk, Virginia's Navy.

Why Hurricane Florence Caused So Much Flooding
3m 2s
Air Date: 02/21/19

Warming air and sea surface temperatures are making storms wetter and more intense.

The World Wide Web Celebrates its 30th Birthday
2m 39s
Air Date: 03/12/19

Without it, you wouldn't be able to watch this video.

What is a Bomb Cyclone?
1m 54s
Air Date: 03/18/19

Discover the science behind the phenomenon.

What Went Wrong with the Boeing 737 Max 8?
3m 22s
Air Date: 03/18/19

Experts weigh in on what may have happened to the Ethiopian flight 302.

This AI Can Help Park Rangers Identify Poachers
3m 27s
Air Date: 03/20/19

A system of small cameras can help park rangers identify possible poachers.

Grandfather of Climate Science and “The Big Experiment”
2m
Air Date: 03/21/19

A pioneer of climate science, explains why he wishes he could have lived another 50 years.

Vaping Cost One Teen His Health and Dreams
3m 59s
Air Date: 03/26/19

Nicotine addiction came with high price for one teen, and he’s not alone.

This Is Your Brain and Body on Power
4m 22s
Air Date: 04/01/19

Discover how power influences your body and brain.

Deepfake Videos Are Getting Terrifyingly Real
3m 36s
Air Date: 04/01/19

Artificially intelligent face swap videos are more sophisticated and accessible than ever.

How the Magnus Force Curves Soccer and Baseballs
3m 26s
Air Date: 04/02/19

Baseball vs. Soccer: Which sport has the best curves?

Using Science to Achieve Invisibility
3m 21s
Air Date: 04/02/19

Achieving true invisibility is a difficult feat.

Fossil Discovery Could Offer Glimpse into Day the Dinos Died
2m 51s
Air Date: 04/22/19

Fossilized fish appear to preserve the fallout of the asteroid that killed the dinosaurs.

This Cute Robot Uses Sophisticated AI to Help Teach Kids
4m 18s
Air Date: 06/05/19

Tega is a robot that uses artificial intelligence to read and respond to kid's emotions.

The 170-Year Search for a Planet Beyond Neptune
2m 29s
Air Date: 06/10/19

There may be a ninth planet at the edge of our solar system — it’s not Pluto and it’s not

The Evidence for Planet Nine’s Existence
3m 3s
Air Date: 06/10/19

Why do some astronomers think there’s a massive planet on the edge of our solar system?

Inside the Search for Planet Nine
3m 14s
Air Date: 06/10/19

The Subaru Telescope at the peak of Hawai`i’s Mauna Kea is on the hunt for Planet Nine.

Six Ways Quantum Computers Could Change the World
3m 50s
Air Date: 06/24/19

See why experts are saying it's the dawn of a new Information Age.

Astronomers Photograph 2 Newborn Planets for the First Time
2m 41s
Air Date: 06/28/19

Researchers photograph two newborn planets for the first time.

The Science Behind This Sleight of Hand
46s
Air Date: 07/09/19

Why this card trick might fool your eyes.

Artificial Intelligence is Helping Get the Lead Out of Flint
6m 32s
Air Date: 11/18/19

An algorithm helps find buried lead, but can residents trust it?

Pluto and Beyond Preview
S46 Ep1 | 26s
Air Date: 01/02/19

The New Horizons spacecraft zooms toward an object 4 billion miles from Earth.

New Horizons Makes Historic Flyby on New Year’s Day
S46 Ep1 | 2m 9s
Air Date: 01/02/19

The New Horizons spacecraft made history by conducting the farthest ever flyby.

Days Before Flyby, Ultima Thule Still Mysterious
S46 Ep1 | 1m 45s
Air Date: 01/02/19