For a somewhat safe climate, 82 percent of world coal reserves and every drop of Arctic oil must not be burned.
Why not vote? An anarchist gives his reasons.
The newly weakened Senate Democratic caucus is trying to muster all the opposition it can to the impending vote on the Keystone XL pipeline.
A new study finds that New York neighborhoods with lousy access to public transit are black holes for employment.
This study examined 77 minor quakes near the Ohio-Pennsylvania border.
Brazilian President Dilma Rousseff says she's serious about confronting climate change, but then why did she appoint denier Aldo Rebelo?
Watch Brooklyn band Woods perform an exclusive, intimate rendition of their song "It Ain't Easy," at Pickathon 2014.
You thought fuel cell vehicles were dead? So did we.
It took more than two years, but the ocean-borne radiation from the Fukushima Daiichi plant is finally detectable on U.S. shores.
We've devised the world's shortest survey to find out what kind of actions our readers are taking. You know you want to.