i need a cost/benefit analysis for global warming can you guys help me?

Answer 1

Cost looks like 10-20 Trillion (10^12) dollars, US.

Googled: "cost global warming" to get
http://www.abc.net.au/worldtoday/content/2006/s1776868.htm
http://business.scotsman.com/index.cfm?id=1821742005

http://www-formal.stanford.edu/jmc/progress/iron/iron.html
proposes that it could be fixed for about 50 billion.
15,000/50 = 300