Humans now engage the Earth at Gaian scale. How did Earth and humans get to this state? Given how we got here, how should we proceed? Biologist Tim Flannery argues that modern evolutionary theory may hold the answers.
Ellie Cohen, head of PRBO Conservation Science, checks out the data to forecast ecological impacts of global warming, especially in California and along the North American west coast. Which species will survive and thrive in the new global climate?
Patrick Blanc, world-renowned botanist and inventor of the vertical garden, discusses the design approach and philosophy behind his incredible creations -- vibrant, large-scale fixtures that now number over 200 throughout the world.
Since his star turn in the documentary Food, Inc., farmer Joel Salatin, has become a "pin up boy" for the growing food "re-localization" movement. Here, he gives his take on food politics after a lifetime of experience in natural and profitable farming.
Dr. Peter Roopnarine presents early research on the impact of the gulf oil spill on local marine life, particularly on mollusks. How long will it take for the gulf to recover, and what, if anything, can scientists learn from the crisis?
It takes far more water to make a plastic water bottle than it holds, and most bottled water is simply water from somebody else's tap! In a country where safe, clean tap water is available almost everywhere, why does this industry continue to thrive?
"The time has come to move beyond eco-elitism to eco-populism," says green jobs advocate Van Jones. He describes how the third wave of environmentalism -- the investment wave -- could revitalize the economy through "green collar" labor.
We've missed our chance to stop global warming, asserts Bill McKibben, and massive changes are already underway on a planet we might as well re-name "Eaarth." In the face of unprecedented crisis, what can humanity do to weather the storm?
In his memoir, Saved by the Sea, David Helvarg recounts a life spent fighting for the world's oceans and the people who depend on them. Now confronted with the wide-scale crisis of the BP gulf oil spill, Helvarg ponders the future of ocean conservation.
The Great Plains are a dynamic but often forgotten landscape, and in desperate need of conservation. Nature photographer and Nebraska native Michael Forsberg shares his work documenting this vast area -- its lakes, prairies, plants and animals.
Drawing on his experiences picking up roadkill, feeding swine, and castrating a lamb with his teeth, Mike Rowe, host of Discovery Channel's Dirty Jobs, discusses how modern American culture belittles necessary labor.