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Learn more about a lush forest that once dominated the Arctic.
3:21
Scientists dig up ancient clams from the ocean 90 miles from the nearest beach.
2:07
Drop yourself into a modern-day swamp, and that's what the ancient Arctic looked like.
2:04
Warming ocean water is eating away at Greenland's glaciers from below.
4:47
See how one small town’s survival is threatened by climate change.
2:32
Carbon dioxide acts like a heat-trapping blanket, warming our planet.
2:56
This family of peregrine falcons is taking advantage of urban Chicago's resources.
2:44
Lake mud from the Russian Arctic tells us that Earth's climate has oscillated in the past.
1:49
Researchers try to prove the existence of a 13th century volcanic eruption using ice.
2:06
What started out as a tropical storm evolved into one of New York City’s worst nightmares.
