Kirk Johnson

Renowned paleontologist Kirk Johnson takes us on an epic adventure through time at the polar extremes of our planet. Following a trail of strange fossils found in all the wrong places—beech trees in Antarctica, hippo-like mammals in the Arctic—Johnson uncovers the bizarre history of the poles, from miles-high ice sheets to warm polar forests teeming with life. What caused such dramatic changes at the ends of the Earth? And what can the past reveal about our planet’s climate today—and in the future?

Aftermath: Population Zero investigates what would happen if every single person on Earth simply disappeared. Explore the interactive world without us.

Sixty-six million years ago, an asteroid wiped out the dinosaurs in a fiery global catastrophe. But we know little about how their successors, the mammals, recovered and took over the world. Now, hidden inside ordinary-looking rocks, an astonishing trove of fossils reveals a dramatic new picture of how rat-sized creatures ballooned in size and began to evolve into the vast array of species—from cheetahs to bats to whales to humans—that rule our planet today.

A look at the state of the global environment including visionary and practical solutions for restoring the planet's ecosystems. Featuring ongoing dialogues of experts from all over the world, including former Soviet Prime Minister Mikhail Gorbachev, renowned scientist Stephen Hawking, former head of the CIA R. James Woolse

DESERT PHOSfate is an artist film that tells about the impact of phosphate on the Sahrawi community and its fate, including the surprising emergence of family gardens and their knowledge of how to farm in the desert without the processed phosphorus that had caused the dislocation of the Sahrawi nomads from their homeland of Western Sahara.

A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwide.

We're entering the Earth's sixth era of extinction -- and it's the first time humans are to blame. CNN introduces you to the key species and people who are trying to prevent them from vanishing.

Fracking the System is a political thriller documentary from the front lines of climate justice activism in Colorado. When a fracking mega-site gets moved from a White neighborhood to a BIPOC neighborhood, a concerned mother fights to try and stop it. This is an investigative exposé about the harms of fracking, the lengths to which the government is complacent with industrial pollution, and the nefarious tactics that the oil and gas industry uses to undermine democratic elections.

A documentary about the 1999 discovery of a Mastodon skeleton in a Hyde Park backyard.