Earth is not prepared for the threat of hazardous rocks from space, say astronauts who helped formulate the U.N. measures When a meteor exploded over Chelyabinsk, Russia in February, the wor... Read more
To move they do not use fuel Four robots have set a new distance world record, swimming more than 3,200 nautical miles (5,926km) across the Pacific Ocean. The drones are taking part in a pro... Read more