Micro fuel cells are already being acclaimed as an alternative to batteries. However, producing them from hundreds of tiny separate parts is complex and expensive. An alternative is now available: ceramic fuel cells that ...
A Japanese defence researcher has invented a spherical observation drone that can fly down narrow alleys, hover on the spot, take off vertically and bounce along the ground.
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.
A U.S. graduate student won second place in a "Greener Gadgets Conference" competition inventing a floor lamp powered by gravity.