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10 mysteries of the universe: What came before the big bang?

10 mysteries of the universe: What came before the big bang?

19 September 2018

Searing bursts of radio waves first spotted a decade ago could come from bouncing black holes – and that suggests a universe might have existed before ours
photo of Mark O'Connell

Evading death and mind-uploading: The ambition of transhumanism

8 May 2018

Transhumanists could not stop for Death but they kindly stopped for Mark O'Connell, who has captured their beliefs and anxieties in his Wellcome Book Prize winning travelogue

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