Whales don't technically sleep. Instead they nap vertically multiple times a day at lengths between 6 to 10 minutes.
If you average 5 or 6 hours of sleep a night, your cognitive impairment is equal to having two drinks.
There are 173 moons in our solar system. However if we include dwarf planets the number climbs to 181.
A plane was grounded when a passenger mistook the equations an Ivy League economics professor was writing; she suspected he was designing a bomb.