Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The average temperature at 40,000 feet above sea level is -60 F.
56
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
4.5 pounds of sunlight strike the Earth each day.
27
German chemists made a replica of a trophy the size of one molecule.
68