One ragweed plant can release as many as one billion grains of pollen!
51
One cubic foot of gold weighs more than 1,200 pounds!
78
According to studies, men change their minds two to three times more often than women.
72
Iron weighs more after it rusts.
16
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Hot water can freeze faster than cold water.
181