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page 2, within a livable range.
This
so-called homeostasis aspect of Gaia theory is more controversial than some
other aspects of the theory, and even among its supporters the premise can
encompass a range of ideas. The idea comes directly from Lovelock’s 1979 book Gaia:
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since the mid-1970s.
Values for
Arizona statewide temperatures (1970–2004) were derived from an online tool
posted by the Western Regional Climate Center at this Web site: http://www.wrcc.dri.edu/cgi-bin/divplot1_form.pl?0202.
The site
can be used to obtain data for the 50 states for a variety of seasons and time
frames.
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Anthony Westerling and colleagues documented.
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Alaska’s
average annual temperature has increased by about 3.5 degrees Fahrenheit in 30
years, while its winter temperatures have increased by 6.3 degrees F, according
to the Alaska Climate Research Center, affiliated with the Geophysical
Institute of the University of Alaska, Fairbanks. See http://climate.gi.alaska.edu/ClimTrends/Change/TempChange.html
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Personal
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ASU Center for Environmental Studies. The 20-degree Fahrenheit nighttime
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