Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
Tahltan Bear Dog (Extinct)
Iberian lynx in close-up
Phylogenetic tree based on the distribution of 120 alleles in 42 populations from around the world,
Chimpanzees live in complex kin groups in which lifelong bonds and individual personalities play key