When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Cold water weighs more than hot water.
93
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Aluminum used to be more valuable than gold!
84
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17