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View all search resultsWhen European naturalists traveled to the tropics in the 1800s, they postulated that birds became more colorful closer to the equator — a theory that scientists confirmed on Monday using artificial intelligence technology.
Scientists who spent years spraying oxytocin up the noses of lions have found that the big cats became much friendlier with their neighbors and less prone to roaring at strangers when dosed up on the so-called love hormone.