On 2006-07-01, Matt Barrow wrote:
1) What percentage of annual CO2 production is human caused and what portion
is natural?

Human production is around 3% of annual planetary CO2 production.

2) What are the short-term and long-term effect of CO2 concentrations?

Ice core records going back hundreds of thousands of years plus other
evidence show that global temperature closely correlates with CO2
levels.

What has this got to do with aviation? Well, most of us GA people make
SUV drivers look like fuel misers.

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