Driving still isn’t great for the environment, but Lyft is taking a step in the right direction.

Pruitt says lighter vehicles could increase car crash fatalities. That's bunk.

The city, activists say, is “weaponizing water as a tool of gentrification.”

Looking for more fixers? We’ve got ’em.

If fish migrated to the depths in the past, maybe they could do it again.

170 congressional Democrats want to boot the EPA chief, but prominent Republicans stand behind him.

Here's what's going down on America's right-hand flank.

Something needs to be done to tackle California's housing crisis. But what?

After a controversial court ruling, Siwatu-Salama Ra went from Paris climate talks delegate to pregnant in prison.

"Back to September 20th," tweeted San Juan Mayor Carmen Yulín Cruz.