In 2011 New York Mayor Michael Bloomberg gave $50 million to the Sierra Club’s Beyond Coal program. A year later, has the money made the difference in the fight against coal? TIME’s Bryan Walsh spoke to Bloomberg to find …

In 2011 New York Mayor Michael Bloomberg gave $50 million to the Sierra Club’s Beyond Coal program. A year later, has the money made the difference in the fight against coal? TIME’s Bryan Walsh spoke to Bloomberg to find …
An unusually explicit climate scientist drops the hedging and says what more and more people believe
NASA’s latest Mars lander transformed an engineering team’s high-risk brainstorming into reality on Sunday, safely lowering the rover into Mars’ Gale Crater. See the top topography of Mars as captured by the HiRise camera …
The rover pulls off an improbable landing — and fires up its instruments for two years of research
The droughts gets broader and deeper, covering more than three-fifths of the continental U.S. And scientific studies show that this sort of drought could only be the beginning
NASA’s Mars Science Laboratory mission set down a large mobile laboratory, the rover Curiosity, using precision-landing technology that makes many of Mars’ most intriguing regions viable destinations for the first time. …
Early Monday morning, the Curiosity rover will attempt to land on Mars. Luckily, NASA is making it pretty easy to follow along online.
The lowest registers of an elephant’s voice are inaudible to humans—but they’ve been a longstanding puzzle all the same
How do you get kids to be eco-conscious? Make recycling cool and expensive.
Stunning images of the sun, Earth and far-away locales in our roundup of cosmic views from July 2012.