Federal authorities charged an Oklahoma man with sending hundreds of letters containing white powder to public officials

A young Pennsylvania woman running the New York City Marathon for the first time to raise money for Parkinson’s disease research collapsed just over two miles from the finish line and later died

A frantic 911 call from the man who fatally shot a 16-year-old shooter at an Oregon elementary school has been released

Every August, monarch butterflies east of the Rocky Mountains begin their migration from southern Canada and the northern United States to central Mexico to hibernate

With voters deciding thousands of races across the country, keeping track of which races to watch throughout the night and when to expect results can get tricky

Rain is clearing but the risk of flooding remains high in storm-weary parts of the Southwest

Federal and local authorities plan to increase police presence in a Dallas entertainment district after deadly shootings over the weekend

As midterm campaigns careen toward their conclusion, Democrats are pushing through intraparty divisions to stay focused on voters’ economic frustrations

The parents of a 1-year-old boy who was shot and killed by a police officer in Mississippi have demanded a meeting with the state official who ruled that the shooting was justified