The earth is approx. 6,588,000,000,000,000,000 tons.
175
The force of a suction cup is calculated using F=AP.
15
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89