Water is not as yielding as you think, says Noah Silberschmidt, founder and CEO of UK-based Silverstream Technologies. For more than a century, gigantic steel vessels have been ploughing the oceans, generating seemingly unavoidable—and surprisingly costly—friction between ship and sea. But this friction can be reduced in an innovative way, says Silberschmidt, with the help of millions of tiny bubbles, each just a millimetre across.
