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Meet the NASA Scientist Who Uses Lasers to Study Forests

Meet the NASA Scientist Who Uses Lasers to Study Forests

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4:05
The Tech Behind Mail-In Voting

The Tech Behind Mail-In Voting

Video
6:20
What is Solar Geoengineering and Why is it Controversial?

What is Solar Geoengineering and Why is it Controversial?

Video
4:16
How Much Coal Do People Burn Each Year?

How Much Coal Do People Burn Each Year?

Video
2:13
The Science of the COVID-19 Treatments Trump Received

The Science of the COVID-19 Treatments Trump Received

Video
6:37
Repairing Notre Dame's Vaults with Underground Quarries

Repairing Notre Dame's Vaults with Underground Quarries

Video
2:51
Stabilizing Notre Dame's Famous Buttresses

Stabilizing Notre Dame's Famous Buttresses

Video
3:03
Saving Notre Dame's Stained Glass Masterpieces

Saving Notre Dame's Stained Glass Masterpieces

Video
3:02
Is it Safe to Fly During the Pandemic?

Is it Safe to Fly During the Pandemic?

Video
6:14
Your COVID-19 Vaccine is Coming

Your COVID-19 Vaccine is Coming

Video
7:12
Half Sisters Unite Thanks to DNA Testing

Half Sisters Unite Thanks to DNA Testing

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4:19
How—and why—DNA Testing Uses Biased Reference Databases

How—and why—DNA Testing Uses Biased Reference Databases

Video
5:20
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NOVA

Did This Asteroid Just Turn into a Comet?

Scientists found bits of rock and dust flying off the asteroid Bennu. Is the OSIRIS-REx spacecraft in danger?