http://www.emporia.edu/earthsci/student/howard2/theory.htm
http://journals.ametsoc.org/doi/pdf/10.1175/1520-0442%281998%29011%3C3069%3ACFBCSR%3E2.0.CO%3B2
http://books.google.com/books?id=zE5-d1IiqxEC&pg=PA407&dq=milankovitch&hl=en&ei=Rw92TfLwCIbNhAfyu6D0Bg&sa=X&oi=book_result&ct=result&resnum=8&ved=0CEgQ6AEwBw#v=onepage&q=milankovitch&f=false
Click to access Atmos_060302.pdf
http://www.jacksonsnyder.com/arc/bepreppages/solar_maximus.htm
http://science.nasa.gov/science-news/science-at-nasa/2000/ast05sep_1/
http://science.nasa.gov/science-news/science-at-nasa/2000/ast05sep_1/
(http://scienceweek.com/2004/sb041217-4.htm, 2004)
http://scienceweek.com/2004/sb041217-4.htm
http://solarscience.msfc.nasa.gov/SunspotCycle.shtml
Click to access nph-iarticle_query
http://www.ucar.edu/news/releases/2006/brightness.shtml
http://debatepedia.idebate.org/en/index.php/Debate:_Is_climate_change_chiefly_human-caused%3F#Is_global_warming_chiefly_caused_by_humans_or_by_natural_phenomenon.3F
http://www.ipcc.ch/publications_and_data/ar4/syr/en/spm.html
http://www.whatsyourimpact.eu.org/methane-sources.php
Might Arctic Warming Lead to Catastrophic Methane Releases?
Click to access ar4-wg1-chapter2.pdf
http://www.earthsave.org/globalwarming.htm
http://atoc.colorado.edu/~seand/headinacloud/?p=204
Might Arctic Warming Lead to Catastrophic Methane Releases?
Click to access ar4-wg1-chapter2.pdf
http://www.earthsave.org/globalwarming.htm
http://atoc.colorado.edu/~seand/headinacloud/?p=204