The rare conditions that led to a surprise tornado in South Dakota
The forecast on Monday hardly featured a chance of thunderstorms in South Dakota. So when a tornado touched down in Watertown ...
Tech Xplore on MSN19 小时
Wave-powered autonomous robot harnesses ocean currents for efficient propulsion
An autonomous underwater vehicle can propel itself efficiently by using the energy in nearby water currents. Underwater and ...
EurekAlert!15 小时
Submersible robot surfs water currents
An autonomous underwater vehicle can propel itself efficiently by using the energy in nearby water currents. Underwater and ...