When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
One third of the electricity produced on earth is used to power electric light bulbs!
75
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16