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Biophysicists have long been amazed by the ear's extraordinary ability to pick up extremely soft sounds. Although it is known that the thousands of hair cells in the inner ear convert...
A simple plastic shell has cloaked a three-dimensional object from sound waves for the first time. With some improvements, a similar cloak could eventually be used to reduce noise pollution...
In 1816, French physician Rene Theophile Hyacinthe Laennec had a young woman on his exam table, and no idea what to do with her. She’d come in complaining of chest pains, and their...