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Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

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The horizontal fraction bar was introduced by the Arabs.

Male individuals of the banded Uromastyx, Uromastyx flavofasciata, are different colours. Most natur Male individuals of the banded Uromastyx, Uromastyx flavofasciata, are different colours. Most natur
Species, subspecies, populations, and individuals. Species are reproductively isolated from one anot Species, subspecies, populations, and individuals. Species are reproductively isolated from one anot
Dominance relationships among individuals play an important role in many primate societies. Dominance relationships among individuals play an important role in many primate societies.
Median Age at First Marriage in the United States Median Age at First Marriage in the United States
US Marriage, US Divorce US Marriage, US Divorce
Individuals from highly divergent lines created by artificial selection Individuals from highly divergent lines created by artificial selection
Video: Retina

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