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.
A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwi...
A look at the state of the global environment including visionary and practical solutions for restor...
Celebrates 30 years of televised specials by The National Geographic Society.
Wars of the future will be fought over water as they are over oil today, as the source of human surv...
Discovering that sharks are being hunted to extinction, and with them the destruction of our life su...
Aftermath: Population Zero investigates what would happen if every single person on Earth simply dis...
The passenger pigeon, the most abundant bird species in North America for thousands of years, became...
A mind-bending, thrilling journey exploring the fragility and wonder of planet Earth, one of the mos...
Beautifully filmed by New Zealand nature photographer Richard Sidey over the past decade around the ...
40, 000 years ago the steppes of Eurasia were home to our closest human relative, the Neanderthals. ...
"The Hypocrite" delves into a critical discourse that is resonating with individuals across various ...
Presenter Hannah Fry reveals how much our planet can change in just a single day and how these daily...
The vaquita, the world’s smallest whale, is nearing extinction as its habitat is destroyed by Mexic...
A black-and-white visual meditation of wilderness and the elements. Wildlife filmmaker Richard Sidey...
Thule, Greenland, also called Qaanaaqis, one of the northernmost towns in the world. As the climate ...
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...
An examination of the extinction threat faced by frogs, which have hopped on Earth for some 250 mill...