A global warming challenge
$100,000 to anybody who can prove that humans cause global warming...here's the details...
$100,000 will be awarded to the first person to prove, in a scientific manner, that humans are causing harmful global warming. The winning entry will specifically reject both of the following two hypotheses:
UGWC Hypothesis 1
Manmade emissions of greenhouse gases do not discernibly, significantly and predictably cause increases in global surface and tropospheric temperatures along with associated stratospheric cooling.
UGWC Hypothesis 2
The benefits equal or exceed the costs of any increases in global temperature caused by manmade greenhouse gas emissions between the present time and the year 2100, when all global social, economic and environmental effects are considered.