Extras
Why Experts Say Permanent Daylight Saving Time is Unhealthy
Early morning sunlight is the key to setting our internal clocks.
Why Experts Say Permanent Daylight Saving Time is Unhealthy
Why NASA is Going Back to the Moon
NASA’s Artemis I is a big step toward sending humans back to the moon.
Why NASA is Going Back to the Moon
Watch the DART Spacecraft Smash into an Asteroid
Could we deflect an asteroid barreling toward Earth? DART offers a first test.
Watch the DART Spacecraft Smash into an Asteroid
How Storm Surges Work—and Why They’re So Deadly
The deadliest part of a hurricane isn’t the wind–it’s water.
How Storm Surges Work—and Why They’re So Deadly
Sharks Are Showing Up Earlier—and Staying Longer
Tiger sharks are showing up off the coast of New England earlier. What’s going on?
Sharks Are Showing Up Earlier—and Staying Longer
How Seaweed May Help Revive Our Oceans
Kelp’s ability to capture carbon from the ocean could help save marine ecosystems.
How Seaweed May Help Revive Our Oceans
The Hidden Cause of Traffic Jams—and How to Solve Them
Self-driving vehicles might be the solution for phantom traffic jams.
The Hidden Cause of Traffic Jams—and How to Solve Them
The False Promise of Cloning Your Pet
Cloning has come a long way since Dolly the sheep, but it still has limits.
The False Promise of Cloning Your Pet
This Device Smells Diseases by Imitating a Dog's Nose
Researchers at MIT create an electronic nose using chemical odor sensors.
This Device Smells Diseases by Imitating a Dog's Nose
War Threatens Ukrainian Nuclear Power Plants
Ukraine's 15 active nuclear reactors generate about half of the country's electricity.
War Threatens Ukrainian Nuclear Power Plants
Animal-to-Human Organ Transplants
In a first, a 57-year-old man received a heart transplant from a genetically modified pig.
Animal-to-Human Organ Transplants
What is 5G, and is it Safe to Use on Planes?
The 5G signal works in a fundamentally different way from 4G.
What is 5G, and is it Safe to Use on Planes?
Introducing NOVA's Financial Lab
Practice making financial decisions by taking care of your pet through three mini-games.
Introducing NOVA's Financial Lab
Can South Carolina's Salt Marshes Be Saved?
Many seafood dishes depend on an ecosystem that's easy to overlook: The salt marsh.
Can South Carolina's Salt Marshes Be Saved?
From Prison to Careers in STEM
Watch how four accomplished scientists began their careers or education in prison.
From Prison to Careers in STEM
Could Antiviral Pills Change the Course of the Pandemic?
The FDA authorized use of the first antiviral pills to treat COVID-19 at home.
Could Antiviral Pills Change the Course of the Pandemic?
Thought Experiment: The Infinite Hilbert's Hotel
At the Hilbert’s Hotel, there’s always room for one more.
Thought Experiment: The Infinite Hilbert's Hotel
The Area of a Circle, Explained with Pizza
Finding the area of a circle is easy with pizza and infinity.
The Area of a Circle, Explained with Pizza
The History of Crypto Goes Further Back Than You Think
Computer scientists and digital rebels built the revolutionary crypto system.
The History of Crypto Goes Further Back Than You Think
What exactly is crypto, and how does it work? This technology is more than just money.
Crypto Decoded Preview
Who Carved These Mysterious Lines in the Desert?
Learn more about the ancient Nazca people and their ancestors, the Paracas.
Who Carved These Mysterious Lines in the Desert?
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
Nazca Desert Mystery Preview
Artificial Intelligence Reveals Ancient Desert Drawings
Can AI help archaeologists uncover more Nazca geoglyphs?