One ragweed plant can release as many as one billion grains of pollen!
51
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Your brain is 80% water.
525
A ball of glass will bounce higher than a ball made of rubber.
73
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118