Balsa wood is classified as a hard wood!
41
Out of all the senses, smell is most closely linked to memory.
146
One cubic foot of gold weighs more than 1,200 pounds!
78
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
A cesium atom in an atomic clock beats over nine billion times a second.
43
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
Iron weighs more after it rusts.
68
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