New evidence suggests that the dawn of speech came before the time of our last common ancestor with Old World monkeys

Scientists get a better idea of the way pressure is turned for us into touch, pain and sound

Helium hydride was detected in gas around a dying star right within our galaxy

Different organs peak at different times, producing a steady, 24-hour pattern

Microplastics are everywhere, even settling down in the quieter reaches of the Rockies. Their effect on human health, if any, is to be determined