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Did you know?

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%).

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

The rapid speed of cAMP production The rapid speed of cAMP production
Preparing a Urine Specimen for Microscopic Examination (for Classroom Evaluation Only) Preparing a Urine Specimen for Microscopic Examination (for Classroom Evaluation Only)
(a) IgA. (b) IgA production. (a) IgA. (b) IgA production.
Electricity production accounts for 25% of greenhouse gas emissions Electricity production accounts for 25% of greenhouse gas emissions
Role of Factors of Production in Determining Growth, 1975–2009 Role of Factors of Production in Determining Growth, 1975–2009
Urine Urine
Video: Premenstrual Syndrome

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