Extras
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?
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
Ice Age Footprints Preview
New Fossil May Reveal Clues to Dinosaurs' Final Days
This might be the first time in 66 million years that this leg has seen the light of day.
New Fossil May Reveal Clues to Dinosaurs' Final Days
Dinosaur Apocalypse: The New Evidence Preview
Striking new fossils paint a picture of life right before the asteroid impact.
Dinosaur Apocalypse: The New Evidence Preview
Dinosaur Apocalypse: The Last Day
Scientists use new fossils to reconstruct the day the dinosaurs died.
Dinosaur Apocalypse: The Last Day
How an Alzheimer’s study reached Black communities
Getting Black individuals involved in a study requires more than just asking them.
How an Alzheimer’s study reached Black communities
Determined: Fighting Alzheimer's Preview
Follow three women enrolled in a new study to try to prevent Alzheimer’s.
Determined: Fighting Alzheimer's Preview
Depression Can Affect Memory—and Mirror Signs of Alzheimer's
Exercise may help depression patients regain memory.
Depression Can Affect Memory—and Mirror Signs of Alzheimer's
The Evolution of Prosthetic Leg Technology
Amputation procedures haven't changed much since the Civil War era.
The Evolution of Prosthetic Leg Technology
Increasing Access to Brain-Controlled Prosthetics
Bionic interventions might allow people to one day design their own limbs.
Increasing Access to Brain-Controlled Prosthetics
How Neanderthals Came to Inhabit Northwest Europe
Stone tools reveal that four species of human have occupied Britain.
How Neanderthals Came to Inhabit Northwest Europe
Climbers Tell Story of Mt. Washington Climbing Accident
Climbing partners have a harrowing experience on Mount Washington in NH.
Climbers Tell Story of Mt. Washington Climbing Accident
An ingenious new technology allows prosthetic legs to move and feel like the real thing.
Augmented Preview
The Mammoth Species You've Never Heard Of
These bones could have belonged to some of the last surviving steppe mammoths in Britain.
The Mammoth Species You've Never Heard Of
Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.