<![CDATA[Smile Earth: Questions & Answers]]> http://www.smilearth.com/ Smile Earth: the site for Environment fanatics Copyright 2007-2008 by Smilearth <![CDATA[Paper or plastic — what’s the greener choice?]]> Fri, 08 Feb 2008 00:00:00 GMT <![CDATA[How much warmer is the Earth likely to become?]]> Thu, 07 Feb 2008 00:00:00 GMT <![CDATA[What is causing global warming?]]> Wed, 06 Feb 2008 00:00:00 GMT <![CDATA[Are humans contributing to global warming?]]> Wed, 06 Feb 2008 00:00:00 GMT