Balsa wood is classified as a hard wood!
41
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Nylon is made from coal and petroleum.
42
One third of the electricity produced on earth is used to power electric light bulbs!
75
Hot water can freeze faster than cold water.
181
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
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39