In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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There are 20 feet of blood vessels in each square inch of human skin.
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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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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
School-age children are often independent and industrious, with a developing sense of self-confidenc
Will the sun rise tomorrow? Are you sure? “Cause and effect” vs. sense experience.
The macula densa and the juxtaglomerular (JG) cells. Osmoreceptors in the macula densa sense low ...