evolutionary biology

Sleep, body, jerks

Why your body jerks before you fall asleep

You’re drifting off to sleep, floating in that hazy realm between wakefulness and dreams, when suddenly—BAM!—your body jerks violently as if you’ve been dropped from

Satellite image of Earth human

5 mind-blowing predictions about life after humans

Earth has been a witness to extraordinary transformations throughout its 4.5-billion-year history. Five mass extinction events have dramatically reshaped the planet’s biological landscape, with each