The U.S. Army is ripping up its own timeline for the next-generation M1E3 Abrams, hustling […] ...

World Cup Cross-Country racing has kicked off back in continental Europe, and with it comes a new batch of lightweight mountain bike prototypes engineered to go fast, and what better way to make your ...

How fast can the Rolex 24 cars go at Daytona? Colin Braun avoided right-hand turns and discovered how fast. And yes, it was a white-knuckler.

Rockets have been central to the space program since their inception, but they're far from the only theoretical way to launch material into space. Since the 1950s, the government has experimented with ...