Two studies published on Tuesday offer differing explanations.
A new study shows that the balance of plankton species will dramatically change as our seawaters grow more acidic.
The discovery that our galaxy holds billions of inhabitable planets has lent new vigor to an old question: Is there life on other planets?
Arctic sea ice volume increased a surprising amount during the cool summer of 2013, but researchers say if overall temperatures continue rising, ice will melt in the long run.
Photographs capturing all of the Earth in a single frame are actually quite rare; many you've seen are composites assembled from multiple shots. But the DSCOVR satellite is set to change that.