The "Kickstarter of solar" just started accepting investments. Here's why you should be excited.
Climate change is not a fight, like abortion or gay marriage, between conflicting groups with conflicting opinions. It's a fight between human beings and physics.
What if grassroots activists joined with green D.C. insiders, got the president to kill the Keystone pipeline, and put a price on carbon? Bill McKibben explains why the election should make us all optimists.
Eight activists, four wifi hotspots, one bus: Trying to jump-start a grassroots fossil-fuel divestiture movement, and seeing some sparks.
As TransCanada prepares to begin construction on the southern portion of the Keystone XL pipeline, a brave crew of Lone Star State residents gears up to block it.
The listless conference in Rio came spontaneously alive for a few hours Thursday, when a youth-led demonstration turned into a mass walkout.
It’s been a tough few weeks for the forces of climate-change denial. But let's not forget how effective they've been over the years.
In 2009, world leaders promised to gradually phase out fossil fuel subsidies. It's time to give them a push in the right direction as the Rio Earth Summit approaches.
This weekend's global day of action will highlight that underneath the immediate distractions of flood and drought, climate change is the biggest thing going on every single day.
We've devised the world's shortest survey to find out what kind of actions our readers are taking. You know you want to.