Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
Four ways to visualize protein structure
A complete cranium of Australopithecus afarensis from Hadar, Ethiopia.
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
The U.S. Department of Agriculture offers the SuperTracker tool to help you track, analyze, and plan ...