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Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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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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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Natural selection of a population for dark coloration. Natural selection of a population for dark coloration.
Dentition, as illustrated in Knight's Sketches in Natural History Dentition, as illustrated in Knight's Sketches in Natural History
Sample Workout in the Target Heart Rate Range Sample Workout in the Target Heart Rate Range
Natural Settings Natural Settings
Natural selection acts on genetic variation Natural selection acts on genetic variation
Markets and Institutions Market Story Problem Markets and Institutions Market Story Problem
Video: X chromosome inactivation in calico cats

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