The noted biologist and public intellectual had some surprising answers to your questions.
A quarter of Americans don't believe in climate change. The White House wants to change that.
$800,000 for food-system improvements may be peanuts on a federal scale, but even peanuts can make a difference at the local level.
Fracking company Baker Hughes painted 1,000 drill bits pink to support the Susan G. Komen Foundation. Yep: no hypocrisy there.
Intelligence Squared takes on a contentious issue in a clear way, and the resulting video makes for a great primer on GMOs.
Climate change is a global injustice that markets won't solve on their own; it will require government intervention and international cooperation.
As Super Typhoon Hagupit bears down on the Philippines, the country's climate commissioner is pleading for action -- and making a few jokes.
Japan spent $1 billion building coal plants in Indonesia and claimed it was "climate financing." Green groups are calling bullsh*t and demanding reform.
Two activists who devised the phrase "Black Lives Matter" discuss its origins -- and why they took their demonstration to the Bay Area's transit system last week.