Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Drying your hands with paper towel will reduce the bacterial count by 45 - 60% on your hands. However, using a hand dryer will increase the bacteria on your hands by up to 255% because it blows out bacteria already living in the, conveniently, warm moist environment.
26
A Native American tribe in South Dakota collects bottle caps left by campers, using them as currency. Several banks in the area now recognize the caps as legal tender.
225
Caffeine boosts memory.
405
Obsessive nose picking is called Rhinotillexomania.
101
Yawns are more contagious among people with closer relationships.
163
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
Mangoes enhance a marijuana high, allowing users to get ‘higher’ more effectively.
11