Extras

Video thumbnail: NOVA Cat Tales Preview

NOVA

Cat Tales Preview

Goddess, demon, house pet? What does science say about the human relationship with cats?

Cat Tales Preview

Video thumbnail: NOVA Are Cats More Expressive Than We Think?

NOVA

Are Cats More Expressive Than We Think?

Why it’s so hard to tell what your cat is thinking.

Are Cats More Expressive Than We Think?

Video thumbnail: NOVA Can Bones Reveal How Dogs Evolved from Wolves?

NOVA

Can Bones Reveal How Dogs Evolved from Wolves?

Learn more about the evolution of our furry companions.

Can Bones Reveal How Dogs Evolved from Wolves?

Video thumbnail: NOVA Dog Tales Preview

NOVA

Dog Tales Preview

Follow the epic journey of dog domestication and see what science says about dogs’ love.

Dog Tales Preview

Video thumbnail: NOVA Do Dogs Love Us or do They Just Want Treats?

NOVA

Do Dogs Love Us or do They Just Want Treats?

It's time to learn the truth once and for all.

Do Dogs Love Us or do They Just Want Treats?

Video thumbnail: NOVA How Climate Has Shifted Over Millions of Years

NOVA

How Climate Has Shifted Over Millions of Years

Lake mud from the Russian Arctic tells us that Earth's climate has oscillated in the past.

How Climate Has Shifted Over Millions of Years

Video thumbnail: NOVA What did the East Coast Look Like 3 Million Years Ago?

NOVA

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

Scientists dig up ancient clams from the ocean 90 miles from the nearest beach.

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

Video thumbnail: NOVA This Alaska Community is Losing Sea Ice to Climate Change

NOVA

This Alaska Community is Losing Sea Ice to Climate Change

See how one small town’s survival is threatened by climate change.

This Alaska Community is Losing Sea Ice to Climate Change

Video thumbnail: NOVA Polar Extremes Preview

NOVA

Polar Extremes Preview

Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.

Polar Extremes Preview

Video thumbnail: NOVA What if Carbon Left Your Tailpipe as Solid Chunks?

NOVA

What if Carbon Left Your Tailpipe as Solid Chunks?

Together, all the cars on Earth would leave quite the pile of carbon behind—every day.

What if Carbon Left Your Tailpipe as Solid Chunks?

Video thumbnail: NOVA Plant Fossils Hint at Arctic's Swampy Past

NOVA

Plant Fossils Hint at Arctic's Swampy Past

Learn more about a lush forest that once dominated the Arctic.

Plant Fossils Hint at Arctic's Swampy Past

Video thumbnail: NOVA A Bird's-Eye View of Carbon Emissions

NOVA

A Bird's-Eye View of Carbon Emissions

What if carbon dioxide pollution were solid carbon chunks?

A Bird's-Eye View of Carbon Emissions

Video thumbnail: NOVA Fifty Million Years Ago, the Arctic Was a Warm Swamp

NOVA

Fifty Million Years Ago, the Arctic Was a Warm Swamp

Drop yourself into a modern-day swamp, and that's what the ancient Arctic looked like.

Fifty Million Years Ago, the Arctic Was a Warm Swamp

Video thumbnail: NOVA How Carbon Dioxide Warms Planet Earth

NOVA

How Carbon Dioxide Warms Planet Earth

Carbon dioxide acts like a heat-trapping blanket, warming our planet.

How Carbon Dioxide Warms Planet Earth

Video thumbnail: NOVA What’s Causing Greenland’s Biggest Glacier to Melt?

NOVA

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

Warming ocean water is eating away at Greenland's glaciers from below.

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

Video thumbnail: NOVA Why Trees Are Living Climate Records

NOVA

Why Trees Are Living Climate Records

Trees have an environmental record etched into their very wood.

Why Trees Are Living Climate Records