Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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