Robotic 'Dolphins' Offer New Clues About Antarctic Ice Melt

Researchers are getting a first-ever fish-eye's view of Antarctica's ice with the aid of three robotic "dolphins." The battery-powered gliders, each about 2 meters (6 feet 6 inches) in length, can descend up to 1,000 meters and measure temperature and salinity in places that would otherwise be unreachable. The new technology has changed the way scientists collect data in isolated polar regions, Reuters reported.