This video shows happened in Baltimore's busy Charles Village neighborhood Wednesday, when a retaining wall buckled and sent cars and mud tumbling onto railroad tracks below.
Photos and videos from the devastating storms killed at least a dozen people, and possibly many times that number, in the U.S. Central Plains and Southeast in recent days.
After a slow start to severe weather season in 2014, Sunday brought storms to the U.S. Central Plains. Monday through Wednesday, the system will move into the U.S. Southeast.
Need great weather information, and need it fast? Here's info on NOAA Weather Radios, and a list of great sources to follow via Twitter, and some recommended apps.
Mountaineers began leaving Mt. Everest yesterday, as Sherpas refuse to climb again this year, out of respect for 16 who died in last week's deadly avalanche.
The Y chromosome, which distinguishes males from females at the genetic level, appeared some 180 million years ago, according to a new study published in Nature.