The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
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
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The sun is 330,330 times larger than the earth.
75
Most dust particles in your house come from dead skin.
48
One cubic foot of gold weighs more than 1,200 pounds!
78
The average home creates more pollution than does the average car.
33