Columbia University

Trump can't block his critics on Twitter, judge rules

Wed, 23 May 2018 - 10:00 GMT

President Donald Trump violated the US constitution by blocking Twitter users who disagree with him.

New brain cells in the old? Study stokes debate

Thu, 05 Apr 2018 - 10:03 GMT

People as old as 79 may still generate new brain cells, US researchers said Thursday.

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