Wolves were once native to the US' Yellowstone National Park -- until hunting wiped them out. But when, in 1995, the wolves began to come back (thanks to an aggressive management program), something interesting happened: the rest of the park began to find a new, more healthful balance. In a bold thought experiment, George Monbiot imagines a wild...

Farming is the worst thing humanity has ever done to the planet, says journalist George Monbiot. What's more: the global food system could be heading toward collapse. Detailing the technological solutions we need to radically reshape food production -- from lab-grown, protein-rich foods to crops that don't require plowing -- Monbiot shares a fut...

To get out of the mess we're in, we need a new story that explains the present and guides the future, says author George Monbiot. Drawing on findings from psychology, neuroscience and evolutionary biology, he offers a new vision for society built around our fundamental capacity for altruism and cooperation. This contagiously optimistic talk will...

Witness the unveiling of Countdown, a major global campaign to cut greenhouse gas emissions. TED has partnered with scientists, policy makers, organizations, activists and more to create an initiative that everyone in the world can be part of. Check out http://countdown.ted.com to learn how you can get involved — and help turn the tide on climat...