Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists are now able to grow 'beating' heart tissue in a lab!
162
German chemists made a replica of a trophy the size of one molecule.
68
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Nearly 50% of the world's scientists are assigned to military projects.
71
The only letter not appearing on the Periodic Table is the letter "J".
180
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118