Polar bears affected by climate change

Findings based on nine studies on three of the world’s 19 subpopulations of polar bears conclude:

  • 2/3 of polar bears gone within 50 years.
“Projected changes in future sea ice conditions, if realized, will result in loss of approximately 2/3 of the world’s current polar bear population by the mid 21st century.
Because the observed trajectory of Arctic sea ice decline appears to be underestimated by currently available models, this assessment of future polar bear status may be conservative. “
  U.S. Geological Survey New Polar Bear Finding
Minimum Arctic ice packComparing the annual minimum extent in September for 2005 and 2007. One of the lowest minimum, 2007 lost 23 percent more that 2005, another low year. The state of California’s outline shows magnitude of lost ice pack.
  Modified from NASA/Goddard Space Flight Center Scientific Visualization Studio. The Blue Marble data is courtesy of Reto Stockli (NASA/GSFC).

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