Could some chimpanzees' crustacean crave yield clues about human evolution?

Why do we fish? At some point eons ago, our primarily fruit-eating ancestors put their hands in the water to catch and eat aquatic life, inadvertently supplementing their diet with nutrients that initiated a brain development process that eventually led to humans. But how did this begin?

from Phys.org - latest science and technology news stories http://bit.ly/2ERzzrN

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