Rockshelter Discoveries Show Neandertals Were a Lot Like Us
Scientific American
It's not easy to say what makes a human -- to define the boundaries of the family. But we now know that it's a big and complex picture, with lots of amazing relatives in it.
Ahana Fernandez trekked through the rainforests of Central America, ears tuned for high-pitched, repetitive chirping and squeaking from greater sac-winged bat pups. Their babbling may shed light on why human babies babble and the origins of speech.
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