Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Your brain is 80% water.
525
Nearly 50% of the world's scientists are assigned to military projects.
71
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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Sound at the right vibration can bore holes through a solid object.
134
Most dust particles in your house come from dead skin.
48