(Source: global-greenhouse-warming.com) Water vapor and clouds cannot sustain the greenhouse effect on their own Researchers at NASA's Goddard Institute for Space Studies (GISS) have concluded, through the use of a new atmosphere-ocean climate model, that carbon dioxide manipulates Earth's temperature. Andrew Lacis of the GISS, along with David Rind and other colleagues, studied the Earth's greenhouse effect, and has concluded that non-condensing greenhouse gases such as carbon dioxide, ozone, chlorofluorocarbons, nitrous oxide and methane play central roles in the greenhouse effect. While water vapor and clouds are the major players when it comes to Earth's greenhouse effect, Lacis and his colleagues...