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Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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On average, the stomach produces 2 L of hydrochloric acid per day.

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

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Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

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There are 20 feet of blood vessels in each square inch of human skin.

The pattern of primary succession at Glacier Bay, Alaska. The pattern of primary succession at Glacier Bay, Alaska.
Products of the Root's Primary Meristems Products of the Root's Primary Meristems
Preventive and Primary Care Services Preventive and Primary Care Services
Regions of the Primary Motor Cortex and Associated Axons of the Corpus Callosum Regions of the Primary Motor Cortex and Associated Axons of the Corpus Callosum
The thymus, a primary lymphoid organ where T cells mature. The thymus, a primary lymphoid organ where T cells mature.
Primary Actions of Hormones Primary Actions of Hormones
Video: Cardiac Cycle (Part 4 of 4)

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