Big-energy states are hoping the cheap oil is just a blip. In Oklahoma, the head of a catering firm delivering food to oil field workers worries that "$40-a-barrel oil? It's going to shut everything."
The disease known as white-nose syndrome has killed millions of bats, but scientists are seeing hopeful signs that some bat colonies are recovering.
For many Americans, buying a house is the biggest financial transaction of their lives, but a new federal report says half of buyers don't shop around for a better interest rate on their mortgage.
Divers retrieved the crashed AirAsia plane's second black box from the bottom of the Java Sea on Tuesday, giving experts essential tools to piece together what brought Flight 8501 down.