Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
One barrel of petroleum holds 42 gallons.
20
The average temperature at 40,000 feet above sea level is -60 F.
56
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34
One ragweed plant can release as many as one billion grains of pollen!
51
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44