rediff News http://www.rediff.com/tags/prof+ken+caldeira India's largest news and entertainment service online.. en-us Sat, 04 May 24 18:06:43 +0000 Sat, 04 May 24 18:06:43 +0000 http://www.rediff.com/push Rediff feeds Copyright: (C) 2009 Rediff.com India Limited. All Rights Reserved. <![CDATA['Plants can't help cool earth if CO2 is in excess']]> http://www.rediff.com/news/report/plants-cant-help-cool-earth-if-co2-is-in-excess/20100517.htm Sat, 04 May 2024 23:36:43 +0530