He hasn’t publicly expressed any interest in another campaign, but there’s lots of media chatter about the theoretical possibility.
Remember last year's disturbing news about the West Antarctic ice sheet collapsing? Wait until you hear what's happening to a huge Antarctic glacier.
This website takes a candid look at who scientists are, why they do what they do, and how they're feeling about the future.
A film about the country’s horrendous pollution made huge waves, and now government officials say they really intend to tackle the problem.
Climate change is leading to fewer and smaller ponds on Alaska's Barrow Peninsula.
There’s at least an 80 percent difference in CO2 emissions between the dirtiest tar-sands oil and the least-dirty non-tar-sands variety.
A new model of the West Antarctic ice sheet shows friction's role in keeping the giant slab from collapsing.
Your grandpa's favorite fish (and mine) can't support a West Coast fishery — or all the charismatic megafauna -- that rely on them.
The company wants to bring 1,000 new trucks to the neighborhood, which is already home to high asthma rates and heavy industry.
We've devised the world's shortest survey to find out what kind of actions our readers are taking. You know you want to.