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Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by
Projections of the Racial-Ethnic Makeup of the U.S. Population Projections of the Racial-Ethnic Makeup of the U.S. Population
Haworth projections Haworth projections
IPCC model projections depend on greenhouse gas emissions IPCC model projections depend on greenhouse gas emissions
This ciliated protozoan is a Stentor. Stentor are common in freshwater lakes and rivers This ciliated protozoan is a Stentor. Stentor are common in freshwater lakes and rivers
Ciliated sponge larva Ciliated sponge larva
Video: Rods and Cones Animation

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