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Cyanide works by making the human body unable to use oxygen.

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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

An example of horizontal gene transfer: antibiotic resistance An example of horizontal gene transfer: antibiotic resistance
Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T
Computerized axial ¬tomography (CAT) of the abdomen taken in the transverse plane. Computerized axial ¬tomography (CAT) of the abdomen taken in the transverse plane.
Sumo wrestlers on a plane. Sumo wrestlers on a plane.
This bike actually flies—thanks to six horizontal propellers and a battery-powered motor. Changing ... This bike actually flies—thanks to six horizontal propellers and a battery-powered motor. Changing ...
An 82-kg painter stands on a long horizontal board 1.55 m from one end. This 27-kg board is ... An 82-kg painter stands on a long horizontal board 1.55 m from one end. This 27-kg board is ...
Video: Chemical Equilibrium between N2O4 (colorless gas) and NO2 (brown gas)

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