(연합뉴스)
http://media.daum.net/digital/view.html?cateid=1050&newsid=20110531113230461&p=yonhap

(사이언스 데일리)
Scientists Debunk Theory on End of 'Snowball Earth' Ice Age
http://www.sciencedaily.com/releases/2011/05/110525141540.htm

This is a view from one of the cap dolostone collection sites in south China, looking along the cliffs of the Yangtze Gorges. (Credit: Thomas Bristow)


(네이쳐)

http://www.nature.com/nature/journal/vaop/ncurrent/full/nature10096.html



(참고)
http://en.wikipedia.org/wiki/Snowball_Earth
http://en.wikipedia.org/wiki/Geologic_temperature_record