An article in The Australian summarizes several climate studies which suggest that we know less than we thought we did about the interaction between so-called "greenhouse gases" and climate change. What puzzles scientists is that for the past 20 years the temperatures haven't been rising as predicted. Alas, alack ....
Our argument here at COTTonLINE has consistently been that there are not simple linear relationships among the climate-causing variables. Also that people who want to believe man is bad for the earth find relationships where, perhaps, none exist.
I am willing to stipulate that too many people jammed together in too little space, as in many cities, will create localized ugly conditions - air, water and soil pollution and mountains of trash.
In my view population density - number of people per square mile/kilometer - is the variable to watch. Spread people out and the earth handles their presence nicely.
