You know emojis have taken over when scientists use them to explain how things work.
In a new series from Mashable, Bill Nye, America's favorite science teacher takes a look at the science of dreaming.
When you turn off your alarm clock in the morning, your day is just beginning. You're groggy. You're tired. You hit snooze like a million times (if you're me). But you're awake.
Your brain, on the other hand, never went to sleep. It was busy working the overnight shift.