MUMBAI: CNN will air a two-part special series Planet In Peril on 24 and 25 October at 6:30 pm. The show which took nearly a year to make takes viewers to four continents and 13 countries where environmental change is not a theory, or possibility, but a crisis happening in real time. Filmed in high-definition, this four-hour documentary tackles the threats to the world's environment.

Bringing viewers the stories behind the statistics, CNN anchor Anderson Cooper, chief medical correspondent Dr Sanjay Gupta and Animal Planet host and wildlife biologist Jeff Corwin will focus on four main issues that threaten the planet and its inhabitants: climate change, deforestation, species loss and overpopulation.

Broadcast to a combined audience of more than 300 hundred million households on CNN International and CNN/US with an in-depth companion site on www.cnn.com/planetinperil, the documentary brings first-hand accounts of environmental strife as Cooper, Corwin and Gupta travel across the globe to explore these changes and reveal what they mean for each region and the world at large.

Cooper and Corwin travelled to Brazil to examine connections between the rapid deforestation of the Amazon River Basin and changes in the world's climate, embedding with "poacher police" amid raids of illegal logging camps. In Thailand and Cambodia, they walk the markets where endangered animals are bought and sold to find out how their removal can affect entire ecosystems. Additionally, they travelled to Greenland to report on its melting ice sheet, where Cooper witnessed one of the world's newest islands, discovered when the ice receded.

Taking viewers beyond the broad headlines, Corwin visits Alaska to help viewers understand how North America's largest carnivore, the polar bear, is quickly losing its habitat and exists at the edge of extinction. Cooper and Corwin report from Yellowstone Park to show how park officials reintroduce species to their native environment.

With his extensive medical expertise, Gupta brings a deep understanding of the environmental pressures on the human population. In China, Gupta examines how the world's most populous nation consumes its natural resources and the toll it takes on its people and the entire world. He also reports from Central Africa to show how climate change is drying up one of the world's largest lakes and the impact that is having on a region already in crisis.