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Stories with person: John Holdren
  • Global warming dials up our risks, UN report says 
    Updated: Mar-30-14 11:29 pm
  • YOKOHAMA, Japan - If the world doesn't cut pollution of heat-trapping gases, the already noticeable harms of global warming could spiral "out of control," the head of a United Nations scientific panel warned Monday.

  • Obama unleashing power of data on climate change 
    Updated: Mar-19-14 6:10 pm
  • WASHINGTON - The Obama administration hopes to fight global warming with the geeky power of numbers, maps and even gaming-type simulations.