Extras

Video thumbnail: NOVA This NASA Scientist Helps Prevent Mars from Contamination

NOVA

This NASA Scientist Helps Prevent Mars from Contamination

How do you keep Earth microbes from contaminating Mars?

This NASA Scientist Helps Prevent Mars from Contamination

Video thumbnail: NOVA Looking for Life on Mars Preview

NOVA

Looking for Life on Mars Preview

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

Looking for Life on Mars Preview

Video thumbnail: NOVA Feast Your Eyes on the First-Ever Mars 2020 Mission Videos

NOVA

Feast Your Eyes on the First-Ever Mars 2020 Mission Videos

Watch amazing high-definition footage of the Perseverance landing.

Feast Your Eyes on the First-Ever Mars 2020 Mission Videos

Video thumbnail: NOVA Secrets in our DNA Preview

NOVA

Secrets in our DNA Preview

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

Secrets in our DNA Preview

Video thumbnail: NOVA How—and why—DNA Testing Uses Biased Reference Databases

NOVA

How—and why—DNA Testing Uses Biased Reference Databases

Are DNA ancestry tests equally accurate for all test takers?

How—and why—DNA Testing Uses Biased Reference Databases

Video thumbnail: NOVA Half Sisters Unite Thanks to DNA Testing

NOVA

Half Sisters Unite Thanks to DNA Testing

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

Half Sisters Unite Thanks to DNA Testing

Video thumbnail: NOVA How Wildfires and Ozone Led to Terrible Air Quality

NOVA

How Wildfires and Ozone Led to Terrible Air Quality

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

How Wildfires and Ozone Led to Terrible Air Quality

Video thumbnail: NOVA What will it take to get out of this pandemic?

NOVA

What will it take to get out of this pandemic?

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

What will it take to get out of this pandemic?

Video thumbnail: NOVA Toxic “Forever Chemicals” Found in Americans' Blood

NOVA

Toxic “Forever Chemicals” Found in Americans' Blood

Learn how they earn the "forever" label.

Toxic “Forever Chemicals” Found in Americans' Blood

Video thumbnail: NOVA How COVID-19 and Climate Change Affect Breathing

NOVA

How COVID-19 and Climate Change Affect Breathing

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

How COVID-19 and Climate Change Affect Breathing

Video thumbnail: NOVA The Science of Unidentified Aerial Phenomena

NOVA

The Science of Unidentified Aerial Phenomena

Ever spotted a strange object in the sky?

The Science of Unidentified Aerial Phenomena

Video thumbnail: NOVA Using Technology to Cope With Drought

NOVA

Using Technology to Cope With Drought

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

Using Technology to Cope With Drought

Video thumbnail: NOVA Preparing for the Pacific Northwest's Next Major Earthquake

NOVA

Preparing for the Pacific Northwest's Next Major Earthquake

The Pacific Northwest is due for a major earthquake.

Preparing for the Pacific Northwest's Next Major Earthquake

Video thumbnail: NOVA How California's Droughts Lead to Other Disasters

NOVA

How California's Droughts Lead to Other Disasters

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

How California's Droughts Lead to Other Disasters

Video thumbnail: NOVA Fact or CAP? How to Deal With Clickbait

NOVA

Fact or CAP? How to Deal With Clickbait

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

Fact or CAP? How to Deal With Clickbait

Video thumbnail: NOVA Can Solar Storms Knock Out Our Power Grid?

NOVA

Can Solar Storms Knock Out Our Power Grid?

Aurora is the beautiful result of space weather.

Can Solar Storms Knock Out Our Power Grid?

Video thumbnail: NOVA Can Humans Deflect an Asteroid?

NOVA

Can Humans Deflect an Asteroid?

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

Can Humans Deflect an Asteroid?

Video thumbnail: NOVA The Science of Exercise—and Getting Back in the Game

NOVA

The Science of Exercise—and Getting Back in the Game

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

The Science of Exercise—and Getting Back in the Game

Video thumbnail: NOVA Sciencing Out: What it Means to Make Information Tangible

NOVA

Sciencing Out: What it Means to Make Information Tangible

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

Sciencing Out: What it Means to Make Information Tangible

Video thumbnail: NOVA How to Make Birdwatching More Inclusive

NOVA

How to Make Birdwatching More Inclusive

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

How to Make Birdwatching More Inclusive

Video thumbnail: NOVA Sciencing Out: How Trust in Medicine and Science is Built

NOVA

Sciencing Out: How Trust in Medicine and Science is Built

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

Sciencing Out: How Trust in Medicine and Science is Built

Video thumbnail: NOVA Sciencing Out: Making Science Accessible and Engaging

NOVA

Sciencing Out: Making Science Accessible and Engaging

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

Sciencing Out: Making Science Accessible and Engaging

Video thumbnail: NOVA The Coronavirus Pandemic's Toll on Mental Health

NOVA

The Coronavirus Pandemic's Toll on Mental Health

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

The Coronavirus Pandemic's Toll on Mental Health

Video thumbnail: NOVA Are You Feeding a Powerful Facial Recognition Algorithm?

NOVA

Are You Feeding a Powerful Facial Recognition Algorithm?

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

Are You Feeding a Powerful Facial Recognition Algorithm?