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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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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Major parts of a kidney Major parts of a kidney
Major parts of a cell. Major parts of a cell.
Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
Eighteen-year-olds were the largest age cohort in the first year of the war in both armies. Soldiers Eighteen-year-olds were the largest age cohort in the first year of the war in both armies. Soldiers
Material safety data sheets (MSDS), now called safety data sheets (SDS), should be readily available ... Material safety data sheets (MSDS), now called safety data sheets (SDS), should be readily available ...
A partial stream sampling exhaust probe being used to measure exhaust gases in parts per million ... A partial stream sampling exhaust probe being used to measure exhaust gases in parts per million ...
Video: Fertilization and Development

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