The number I’ve heard for the half-life of a molecule of CO2 in the atmosphere is 100 years, much shorter for any other species of GHG. Just like Al Gore. I have no idea what he is talking about.
The human contribution (3%) applies to a gas CO2 that itself comprises only 0.38% of the Earth's atmosphere.
Got that? Ok.
Now: of the man-made component (approximately 0.0114%), only 17% of that amount originates in the US and Canada, and much of that is attributable to agriculture, forestry, and other land use.
Even the most draconian, industry-ruining, economy-destroying regulations on U.S. power plants imaginable would result in a negligible reduction in global CO2 levels, and might even result in an increase, owing to the need for humans to burn increased amounts of wood for heat.
The molecule may change through chemical reactions but the matter is still there just as it always has.
Al Gore knows exactly what he’s talking about. He knows that global warming is making him rich and is a great tool for expanding control over Americans.
He also knows that 47% of the population believes whatever he says.