Authorities rescued a pair of hikers in Western Massachusetts on Saturday night with the help of a smartphone app.

In the United States, Mass shootings are widely classified as incidents in which a shooter kills at least four or more victims. The rise of mass shootings has been closely associated with calls for ...

Every mass shooting in the U.S. raises calls for better policies to prevent such tragedies. There's evidence suggesting that certain kinds of laws may reduce deaths from mass shootings, say scientists ...