http://www.orangelinker.com/Blogs/Science/SEO Directory http://science-n-technology-updates.blogspot.comNew data show that the balance between the airborne and the absorbed fraction of carbon dioxide has stayed approximately constant since 1850, despite emissions of carbon dioxide having risen from about 2 billion tons a year in 1850 to 35 billion tons a year now.Fri, 08 Jan 2010 16:04:25 GMT