Scientific progress could result in human extinction

Our present moment is characterized by a growing obsession with the long term. The study of climate change, for example, relies on increasingly long-range simulations. Science's predictions are no longer merely hypotheses ...

Nine black rhinos from S.Africa relocated to Tanzania

Nine black rhinos from South Africa have arrived in the Serengeti as part of efforts to repopulate the park with the critically endangered species, Tanzanian authorities said Tuesday.

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