Twitter is tackling threats of violence with a new "zero tolerance" policy. The new guidelines explain what happens if accounts break the new rules.

A Greek train station master has been arrested after a deadly train collision. A passenger train carrying hundreds of people collided with a freight train on Feb. 28, killing dozens.

At a Feb. 28 hearing, House members addressed the ongoing crisis on the southern border. The terrible toll fentanyl has taken on the U.S. population took center stage.