Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
A cesium atom in an atomic clock beats over nine billion times a second.
43
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Iron weighs more after it rusts.
68