Up Next

Using Drones to Solve 170-Year Bowhead Whale Mystery

Using Drones to Solve 170-Year Bowhead Whale Mystery

Using Drones to Solve 170-Year Bowhead Whale Mystery

Video

3:00

This Little Armadillo Was a Big Ambassador for His Species

This Little Armadillo Was a Big Ambassador for His Species

This Little Armadillo Was a Big Ambassador for His Species

Video

3:51

Why Trees Are Living Climate Records

Why Trees Are Living Climate Records

Why Trees Are Living Climate Records

Video

1:29

Plant Fossils Hint at Arctic's Swampy Past

Plant Fossils Hint at Arctic's Swampy Past

Plant Fossils Hint at Arctic's Swampy Past

Video

3:02

What did the East Coast Look Like 3 Million Years Ago?

What did the East Coast Look Like 3 Million Years Ago?

What did the East Coast Look Like 3 Million Years Ago?

Video

3:21

This Canadian Cave Has Been Frozen Since the Last Ice Age

This Canadian Cave Has Been Frozen Since the Last Ice Age

This Canadian Cave Has Been Frozen Since the Last Ice Age

Video

3:11

Fifty Million Years Ago, the Arctic Was a Warm Swamp

Fifty Million Years Ago, the Arctic Was a Warm Swamp

Fifty Million Years Ago, the Arctic Was a Warm Swamp

Video

2:07

A Bird's-Eye View of Carbon Emissions

A Bird's-Eye View of Carbon Emissions

A Bird's-Eye View of Carbon Emissions

Video

1:56

What if Carbon Left Your Tailpipe as Solid Chunks?

What if Carbon Left Your Tailpipe as Solid Chunks?

What if Carbon Left Your Tailpipe as Solid Chunks?

Video

2:12

How Carbon Dioxide Warms Planet Earth

How Carbon Dioxide Warms Planet Earth

How Carbon Dioxide Warms Planet Earth

Video

2:32

What’s Causing Greenland’s Biggest Glacier to Melt?

What’s Causing Greenland’s Biggest Glacier to Melt?

What’s Causing Greenland’s Biggest Glacier to Melt?

Video

2:04

This Alaska Community is Losing Sea Ice to Climate Change

This Alaska Community is Losing Sea Ice to Climate Change

This Alaska Community is Losing Sea Ice to Climate Change

Video

4:47

Back to Show

NOVA

Taking Orders to Be Violent Might be Easier Than You Think

The Milgram Shock Experiment suggests that when an authority figure makes an order, even if seemingly violent, most people will carry it through.