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.
The passenger pigeon, the most abundant bird species in North America for thousands of years, became...
Wars of the future will be fought over water as they are over oil today, as the source of human surv...
Fracking the System is a political thriller documentary from the front lines of climate justice acti...
Aftermath: Population Zero investigates what would happen if every single person on Earth simply dis...
Thule, Greenland, also called Qaanaaqis, one of the northernmost towns in the world. As the climate ...
VAKA is a short documentary about the energy and resilience of the Tokelauan people as they weave th...
Presenter Hannah Fry reveals how much our planet can change in just a single day and how these daily...
The climate is changing, global temperature is rising. The impacts are already apparent, especially ...
Dr Helen Czerski delves into the Horizon archive to chart the transformation of a little-known theor...
Professor Iain Stewart and Professor Kathy Sykes take a timely look at global warming, exploring the...
A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwi...
A black-and-white visual meditation of wilderness and the elements. Wildlife filmmaker Richard Sidey...
A look at the state of the global environment including visionary and practical solutions for restor...
Investigate how an asteroid vanquished the dinosaurs 66 million years ago. Join scientists as they d...
We call them o-rang-u-tans, which literally means "forest persons" in the Malay and Indonesian langu...
In the Netherlands, 200,000 young people are concerned about the end of the world and the major clim...
An examination of the extinction threat faced by frogs, which have hopped on Earth for some 250 mill...
Milah van Zuilen, visual artist and forest ecologist in training, uses the square to deal with the h...