Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Sound travels about 4 times faster in water than in air.
408
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Indoor pollution is 10 times more toxic than outdoor pollution.
62
One cubic foot of gold weighs more than 1,200 pounds!
78
German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18