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  1. Life

    Two steps to primate social living

    Evolutionary shifts about 52 million and 16 million years ago led to the group structures observed today, researchers argue.

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  2. Tech

    Tiniest car gets a test drive

    Scientists build the world's tiniest electric 'roadster,' and zap it into action.

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  3. Life

    A gland grows itself

    Japanese researchers coax a pituitary to develop from stem cells in a lab dish.

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  4. Life

    Prehistoric horses came in leopard print

    Dappled animals, once thought to be the result of selective breeding after domestication, were around when early humans depicted them on cave walls.