It's a tough world, all right. Too bad it's not tougher. Right now Earth is looking pretty fragile as it suffers from increasing human punishment.

This isn't really news, of course. But CNN has packed the two-night, four-hour "Planet in Peril" with information and images that give a familiar story new urgency. Here is an eye-opening, often heart-wrenching exploration.

Airing Tuesday and Wednesday at 9 p.m. EDT, "Planet in Peril" dispatched correspondents Anderson Cooper and Dr. Sanjay Gupta, as well as Animal Planet wildlife biologist Jeff Corwin, to report on far-flung instances of "environmental change." This term encompasses four key areas: climate change, vanishing natural habitats, disappearing species and human overpopulation.

 Source : Yahoo News