The urban heat island effect is increasing in many American cities.
A mining area of 600 square miles has polluted as much as 1,700 miles of streams.
Meanwhile, anti-fracking activists are descending on D.C. for a weekend protest -- with banjos in tow.
We weren't going to tell you which presidential candidate said this, but we think you probably would have guessed.
In this episode, Shell still hasn't drilled anything -- and time may be running out!
Strong thunderstorms may send moisture high into the atmosphere, where it combines with remaining CFCs to break down protective ozone gas.
You hate it. I hate it. We all hate it for ... ice ... cream. (Oops, that didn't work.)
Romney is giving oil executives a good reason to vote for him. (Making, by our count, 465,361 such reasons.)