SETTING CARBON CAPS IS INSANE
We do not set the maximum amount of carbon-dioxide and methane etc., that the atmosphere can take. The planet does. And we were told at the big scientific conference in London at the beginning of 2005 that 400ppm is it--and that 'there is no safe increase' from the 380ppm that we were then at. Which means we have reached the planet's cap. Any figure dreamed up by brain-damaged politicians is therefore irrelevant, and dangerous (because it looks like useful action), and very stupid.
Setting 'carbon caps' is like a doctor telling a cancer patient that he has to have a certain amount of cancer. Just live with it, sir. And die.