Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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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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Asthma cases in Americans are about 75% higher today than they were in 1980.
A male American redstart, Setophaga ruticilla.
In the past year, about one in five adults in the United States reported symptoms of anxiety ...
American people aren't the only ones getting bigger—American pets are also putting on pounds
Dolphin’s ability to understand an artificial language
Sign Language
One year ago, Christos bought 1000 units of the Dominion Aggressive Growth Fund at $20.35 per ...