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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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The FDA recognizes 118 routes of administration.

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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Working and Living and Playing in the City Dump of Phnom Penh, Cambodia Working and Living and Playing in the City Dump of Phnom Penh, Cambodia
Working and Living and Playing in the City Dump of Phnom Penh, Cambodia Working and Living and Playing in the City Dump of Phnom Penh, Cambodia
Safety glasses should be worn at all times when working on or around any vehicle or servicing any ... Safety glasses should be worn at all times when working on or around any vehicle or servicing any ...
Selective breeding of maze-bright and maze-dull strains of rats by Tryon (1934). (Data from Cooper, ... Selective breeding of maze-bright and maze-dull strains of rats by Tryon (1934). (Data from Cooper, ...
A mobile weather station that can be used to gather current weather data at the scene of hazardous ... A mobile weather station that can be used to gather current weather data at the scene of hazardous ...
Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies. Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies.
Video: Sperm Formation

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