Déjà vu occurs when your brain tries to apply a memory of a past situation to your current one, fails, and makes you feel like it's happened.
12
It's impossible to kill yourself by holding your breath.
703
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Caffeine boosts memory.
405
In 1976, an underachieving Princeton junior undergraduate wrote a term paper detailing how to make a nuclear bomb. He got an "A", but never got his paper back because it was seized by the FBI.
16
The average person eats almost 1500 pounds of food a year.
157
The symbol on the 'pound' key (#) is called an octothorpe.
82
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240