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Your phone is like a spy in your pocket

Consider everything your smartphone has done for you today. Counted your steps? Deposited a check? Transcribed notes? Navigated you somewhere new? Smartphones make for such versatile pocket assistants because they’re…

New device can transmit underwater sound to air

Don’t expect to play a game of Marco Polo by shouting from beneath the pool’s surface. No one will hear you because, normally, only about 0.1 percent of sound is…