Navy test fires electromagnetic cannon

The US Navy announced a successful test Friday of an electromagnetic cannon capable of firing a projectile 110 nautical miles (200 kilometers) at five times the speed of sound.

South Koreans triumph in US robot challenge

South Korean boffins carried home the $2 million top prize Saturday after their robot triumphed in a disaster-response challenge inspired by the 2011 Fukushima nuclear meltdown in Japan.

DARPA releases video of HTV-2 hypersonic glider flight

An unmanned glider streaks over the Pacific Ocean at 20 times the speed of sound in a video released Thursday by a U.S. defense research agency experimenting with technology that could give the military the ability to strike ...

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