Scientists are hoping to treat diseases including cancer and Alzheimer's by influencing how cells make life-or-death decisions.

With the government shutdown, the National Flood Insurance Program is no longer writing new policies. It's causing problems for would-be homeowners, but private companies have stepped in to help.

The acknowledgement of covert action in Venezuela comes after the U.S. military in recent weeks has carried out a series of deadly strikes against alleged drug-smuggling boats in the Caribbean.