Hillary Clinton Keeps Ducking Questions About the Keystone Pipeline

How many different ways can she say "no comment"? Let's count them.

Hillary Clinton's Climate-Change Plan Is Anything But Comprehensive

She hasn't answered any of the most controversial questions yet.

2015: A Year of Record-Breaking Extreme Weather

Here’s a running list of this year’s frightening climate milestones.

Republicans’ Flip-Flop on Wind Energy Could Hurt Them in 2016

Republicans were actually among wind energy’s early proponents. Not anymore.

Shell's Arctic Drilling Adventure Is a Disaster Waiting to Happen

Despite one screwup after another, the energy company is determined to strike oil there.

Scott Walker Is the Most Dangerous Candidate on Climate Change

For one thing, the Koch brothers are poised to support him.

This Is What Your Hot Dog and Burger Are Doing to the Planet

Americans already hold more responsibility for climate change than the rest of the world. Don't make it worse.

Clinton and Sanders Have a Shared Weakness, and Martin O’Malley Is Exploiting It

O’Malley is quickly becoming a favorite among environmentalists.