Google is celebrating Rene Laennec's 235th birth anniversary with its very special doodle.Laennec, a French physician, is the inventor of stethoscope.Laennec died of tuberculosis in 1826 at the age of 45.In 1816, Laennec was examining a woman patient complaining of heart problems and had to listen to her heartbeat. He felt uncomfortable to place his ear on her chest particularly because she was overweight. Laennec rolled up a piece of paper and pressed it to the woman's chest..