Complexities of Human Evolution and Species Definition

A protest movement that began in December at last brought Sudan’s military brass on board. The country’s cycle of dictatorship and democracy may be repeating itself. Bitcoin just turned ten, but it’s still far from fulfilling its promise to upend the financial system—we examine its fundamental shortcomings. And, the human family tree got bigger this week, but as new data flood in the murkier the human-evolution story seems to get.

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