Global Warming: Is it Real?
http://whyfiles.org/shorties/064lake_ice/index.html

David Tenenbaum, Terry Devitt, The Why Files, The Why Files


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This short article from the Why Files discusses research that provides new evidence for a century-long warming trend. The research is based on records of lake and river ice melting and freezing dates over a 150-year period in the Northern Hemisphere. Researcher John Magnuson of the University of Wisconsin-Madison published his results in the journal Science.

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This resource originally cataloged at:

DLESE

Subject: Geoscience:Atmospheric Science:Climatology
Grade Level: Intermediate (3-5), General Public, High School (9-12), Middle (6-8)
Theme: Teach the Earth:Incorporating Societal Issues:Climate Change, Teach the Earth:Course Topics:Atmospheric Science