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How do brain cells send messages?
Live Science via Yahoo News· 11 months agoillustration shows a synapse (gap between two nerve cells) where chemical messengers from one cross over to the other In a fraction of a second, we...
Does Pulling Gray Hair Cause More? Experts Explain
InStyle via Yahoo News· 4 weeks agoFor years, the hair debate has existed: does pulling gray hair cause more of them to grow? Here, a hairstylist, dermatologist, and trichologist weigh in...