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Here are 3 people-animal collaborations besides dolphins and Brazilians

Here are 3 people-animal collaborations besides dolphins and Brazilians

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We’ve all heard that dogs are a man’s best friend, but our canine companions don’t make up the entirety of humankind’s friend circle. Humans...
50 years ago, scientists debated when humans first set foot in North America

50 years ago, scientists debated when humans first set foot in North America

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Early man in America takes a step backward — Science News, January 27, 1973 “Early Americans lived among and hunted mammoth, camel, extinct horse...
How plant ‘muscles’ fold up a mimosa leaf fast

How plant ‘muscles’ fold up a mimosa leaf fast

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Call them plant motors. Or plant muscles. Tiny bulges of specialized cells in a mimosa plant can fold its feathery leaflets together in seconds,...