Dropping shares in fossil fuel companies might not make a huge difference on its own, but it can help lay the groundwork for other types of climate progress.
And you were worried he wasn't taking the crisis seriously enough.
A newly proposed "pied-à-terre tax" in New York City would apply to luxury homes owned by people who don’t actually live in the city.
Mayors and municipal governments are doing a lot, and can do a lot more, even while national governments are pathetic laggards.
The president can't commit to the U.N. Green Climate Fund because Congress won't go along, but he's going to factor climate resilience into international development plans. Hey, it's something.
At the U.N. Climate Summit, Obama said the U.S. and China will take the lead on fighting climate change. "It’s what big nations have to do,” he said. OK, we're waiting ...
Organizers estimate that 310,000 people joined the New York climate march, and each one had a point to hammer home.
It's been five years since the Copenhagen climate conference, and things have just gotten worse.
The largest demonstration in U.S. history was a nuclear disarmament rally in New York in 1982. Today's climate activists are following that lead.
We've devised the world's shortest survey to find out what kind of actions our readers are taking. You know you want to.