>>>It is a bit naive to think that at least part of global warming is not caused by greenhouse gases. <<<
Why? Is there any proof whatsoever that so-called “greenhouse gases” even exist? After all, the chief “villian”, according to the Global Warming Alarmists, is Carbon Dioxide, which man and animals exhale on every breath, and plants “inhale” as their basic food for growth. Plants actually benefit from increased Carbon Dioxide. Check this out:
http://www.purgit.com/co2ok.html
BTW, it is a bit naive to think that Al Gore is telling the truth about anything, except maybe his name. It is also a bit naive to think that man can alter the climate of this vast planet.
Does ANYBODY know the amount of CO2 in our natural environment?
Fresh air contains approximately 0.033% CO2 by volume. In the respiratory action (breathing) of all animals and humans, CO2 is exhaled. There is about 5% in the air we breathe out.
Water vapor is the main GHG. 90% if it naturally produced.