A cubic yard of air weighs about 2 pounds at sea level.
31
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The bark of an older redwood tree is fireproof.
65
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15