The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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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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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 first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
New Species (BAT)
Cleaning Agent
Our species’ ability to form social bonds and be loyal and cooperative within our “tribe” may ...
Reducing Radicals
What is the strongest oxidizing agent of the following set: MnCl2, Mn(OH)3, MnO2, KMnO4?