Take black holes, for example. They're some of the most violent objects in our universe, powerful enough to rip entire stars to pieces. Their secret weapon is gravity. You see, the more mass you ...

Defenders can hold out against Russians for now, but impact of U.S. weapons and intelligence halt will “cascade and compound” over time.

Justin Rose leads The Masters by one shot after 36 holes, and the 44-year-old has an expensive secret weapon that has helped ...

The Pittsburgh Steelers suddenly have a pretty big hole in their backfield after losing Najee Harris to free agency, and while Harris wasn’t exactly a stalwart for the Steelers, he was at least ...