U.S. life expectancy jumped last year, and preliminary data suggests there may be another — much smaller — improvement this year.

The number of U.S. fatal overdoses fell last year.

The U.S. government will pay for a large study measuring whether safe injection sites can make a dent in the nation's overdose epidemic.

More than 107,000 Americans died of drug overdoses last year, setting another tragic U.S. record.