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Sound can identify the contents of homemade bombs, measure the temperature in a nuclear reactor, and even perform brain surgery. 

There are numerous forms of nonverbal communication in nature. Body language, for instance, is one such example, but it's very limited in what kind of messages it can convey. Pheromones are another, in

The Greek polymath Archimedes is said to have solved the mystery of buoyancy in a bathtub. Even if the story is apocryphal, his principle isn't: If an object weighs less than the water it displaces, it won't sink. Even concrete can float. Materials scientist Joseph-Louis Lambot built a concrete dinghy featured in the 1855 World's Fair. And to conserve steel during World War II, the U.S. made 24 concrete ships. Today, college teams race custom boats at an annual concrete canoe competition. A team

At the IFA, Sony has pulled the wraps off the Xperia Z3 Tablet Compact. The company introduces it as a device that ‘re-defines lightness, re-invents entertainment and re-imagines power.’