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I always used to wonder why we get fevers. What benefit could our body possibly have by purposely overheating us, sometimes to the point of near brain damage? A couple weeks ago I was teaching my student about the immune system and was somewhat surprised when I learned what fevers actually do. When you...

Scientists have developed a new eye implant that may allow blind people to see. Early trials have given their patients the ability to perceive light, shapes, and movement. The eye normally takes in light, focuses it on the retina on the back of the eye, and the retina transmits an electrical signal to...