(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
(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