global warming as political science

[Gordon Fitch]

> >Hot Air is Bad for Us
> >By Alexander Cockburn
> >The current uproar over the posture of the Bush administration on 
> >global warming and, most recently, on power plant emissions vividly 
> >illustrate the political hypocrisy and opportunism imbuing debates 
> >on environmental issues.
> >
> >Take first global warming. The charge that the current phase of 
> >global warming can be attributed to greenhouse gases generated by 
> >humans and their livestock is an article of faith among liberals... 
> >Yet the so-called "anthropogenic origin" of global warming remains 
> >entirely non-proven...

Brad DeLong:
> So what does Cockburn think is "not proven"?
> 
> --That human activity is dumping a lot of CO2 and CH4 and other 
> things into the atmosphere?
> 
> --That over the next century human activity is going to dump a lot 
> more CO2 and CH4 into the atmosphere?
> 
> --That human activity-produced CO2 and CH4--like other CO2 and CH4 
> molecules--in the atmosphere trap heat?
> 
> What remains to be proven?

The fundamental phenomena?