1[1]Cowen R C.Earth could warm up fast[N/OL].Christian Science Monitor,2006-01-26.[2006-02-20].http://www.csmonitor.com/2006/0126/p16s01 -stss.html.
2[2]Mitsui M.Bacteria aiding global warming[N/OL].Daily Yomiuri,2006-02-16.[2006-02-20].http://www.yomiuri.co.jp/dy/national/20060216TDY01002.htm.
3[3]Khadem N.Fires up as world warms[N/OL].Age,2006-02-15.[2006-02-20].http://www.theage.com.au/news/national/fires-up-as-world-warms/2006/02/14/1139890738844.html.