The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
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
If the chemical sodium is dropped into water it will immediately and violently explode.
67
A cesium atom in an atomic clock beats over nine billion times a second.
43
Nylon is made from coal and petroleum.
42