Extras
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
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
How Carbon Dioxide Warms Planet Earth
Carbon dioxide acts like a heat-trapping blanket, warming our planet.
How Carbon Dioxide Warms Planet Earth
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
How Earth’s Climate Changed Over the Past 500 Million Years
Learn more about our planet’s Hothouse and Icehouse climates.
How Earth’s Climate Changed Over the Past 500 Million Years
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
Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.
Polar Extremes Preview
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
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?
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?
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?
Why Trees Are Living Climate Records
Trees have an environmental record etched into their very wood.