Two snow cover maps show the difference between snow extent in North America on March 3, 2011 and on March 5, 2012. The 2012 cover is spottier than the 2011.
It is technically winter, but the U.S. is experiencing record breaking warmth usually seen in early summer. Meanwhile, it's been cold in Europe and Asia.
EarthSky's Science Communicator of the Year says that telling people about how scientists work is a key to communicating the science of climate change.
Seismic disturbances may precede tornadoes. Researchers found that before the tornadoes of early March 2012, seismographs recorded atmospheric phenomena.
As of early March 2012, Japanese tsunami debris from the March 11, 2011 tsunami had not reached Midway Atoll beaches, according to a wildlife biologist there.