Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
According to studies, men change their minds two to three times more often than women.
72
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The average home creates more pollution than does the average car.
33
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42