Like snow sliding off a roof on a sunny day, the Greenland Ice Sheet may be sliding faster into the ocean due to massive releases of meltwater from surface lakes, according to a new study from the Cooperative Institute for Research in Environmental Sciences (CIRES) and the University of Colorado Boulder (CU). Such lake drainages may affect sea-level rise, with implications for coastal communities.

Good news for penguin lovers! New satellite images show that there are twice as many emperor penguin colonies in Antarctica than previously thought.

Three Landsat images show the expansion of massive salt evaporation projects in and around the Dead Sea, over the span of 39 years.

Researchers take a numerical approach to analyzing results of the Viking landers experiments from 1976 and say the Vikings did find life on Mars 36 years ago.

At least six people died early Sunday after a tornado outbreak hit in Woodward, Oklahoma. Most of last night's tornadoes struck in Kansas.

Students participating in the MoonKAM project used NASA's GRAIL spacecraft to capture this wonderful image of Earth as seen from the moon's far side.

Do you think the National Weather Service using words like catastrophic and unsurvivable will help Americans tune in - or tune out - to tornado warnings?

Violent tornadoes appear likely in the U.S. Central Plains on Saturday, April 14, 2012. If you live there, be prepared for today's potential tornado outbreak.

Marine researchers have linked the collapse of Larval oyster seed production at a commercial oyster hatchery in Oregon to an increase in ocean acidification.

Alive inside! Watch this wonderful video of an elderly man in a nursing home reacting to music.