The familiar sounds of your heart are made by the heart's valves as they open and close.
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The human body produces and destroys 15 million blood cells every second.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Model organisms used to study the genetics of development
Regulation of E. coli GS by covalent modification
Berthe Morisot, Reading.
A steady needle reading that drops 2 or 3 inches Hg when the engine speed is increased slightly ...