The Global Warming Skeptic Challenge promised to pay $10,000 (later $30,000) to anyone who, using the scientific method, could prove manmade global warming was t real. Eighty-six submissions (including some duplicates) are presented along with the response reviewing the scientific validity of each. End tes, a bibliography and an index make this a handy reference on the debate on the reality of manmade climate change and global warming.