Scientists have discovered an enzyme in bacteria that is capable of breaking down woody plant material, and their findings could make biofuel production more efficient and sustainable.
The Mars Express spacecraft observed an alignment of Jupiter and the Martian moon Phobos. Captured images now appear as an animation of this rare event.
What's in a kiss? Sheril Kirshenbaum says there's a lot more to it than just lips on lips. Read more about the importance of kissing for humans and animals.
NOAA predicts a busy 2011 season for Atlantic hurricanes. Chris Landsea of the National Hurricane Center explains more about the 2011 Atlantic Hurricane season.
Our water use has the potential to reach peak limits. Water expert Peter Gleick said we've already hit peak limits in many parts of the world. Read more about peak water.
Why are millions of girls missing from Asia? The growing scarcity of females has tilted the balance in nations where "gendercide" is practiced on a large scale.
Biological oceanographer Nancy Rabalaisthe speaks with EarthSky about how the extreme flooding of the Mississippi River in spring 2011 might result in the largest-ever dead zone in the Gulf of Mexico.