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    • Ventilation - Nature

      Nature· 20 minutes ago

      IN modern life, with its enormous populations living under artificial conditions in towns and cities, the subject of ventilation, or the supply of sufficient pure air to each individual for ...

    • The Species Problem in the Light of Genetics1 - Nature

      Nature· 35 minutes ago

      DARWIN held that the differences between species were due to the accumulation of such smaller differences as distinguish varieties within a species. Since the rediscovery of Mendel's papers, ...