Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The bark of an older redwood tree is fireproof.
65
For every gallon of sea water, you get more than a quarter pound of salt.
45
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The only letter not appearing on the Periodic Table is the letter "J".
180
Diamonds can be shattered with a hammer.
-104