If people used to date to meet “the one” and settle down, now they date just to date. And while that’s ultimately a good ...

As we sleep, our brain moves through four stages and two phases: non-rapid eye movement (NREM) and rapid eye movement (REM).

4 “We know so little about the very early stages of human development,” said Nicolas Plachta, a developmental biologist at the University of Pennsylvania who was not involved with the study. To ...