Balsa wood is classified as a hard wood!
41
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
A cubic yard of air weighs about 2 pounds at sea level.
31
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Each day, up to 150 species of life become extinct.
-23
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118