When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
About two hundred babies are born worldwide every minute.
237
Babies who wear disposable diapers are five times more likely to develop diaper rash than those that wear cotton diapers.
39
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
It takes 492 seconds for sunlight to reach the Earth!
44
Water is actually naturally blue.
48
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240