Yes. We learned all that in high school too. But I think you spent more time in Greenpeace’s kindergarten than in a College. Everything you say can be found in Wikipedia (and remember that Wikipedia is written by the common people and not by experts in scientific disciplines, as Wikipedia is full of mistakes, assumptions presented as facts, mistakes, and hypothesis presented as already proven. Now let us analyze what your knowledge has made you to write and claim as facts: (Jesus!) The amount of CO2 absorbed by vegetation is trifle. Sinks for CO2 are in other parts as the oceans. Actually, mature forests as the Amazon jungle (and ALL other mature forests in the world have a negative CO2/O2 balance, that is, they produce more CO2 than they absorb. Only newly planted and growing forests absorb CO2 from the air and convert carbon molecules to lignine for wood production. Amazing. I have read many weird and flawed explanations for the action of the CO2 gas in the atmosphere, but this is the first time I’ve heard about the “blocking” properties of CO2 in the stratosphere. CO2 is absolutely transparent for the incoming radiation from the Sun. Much later, it has a small ability to “hold” some long wavelengths irradiated from the surface. And that’s it. If it were “blocking” radiation (photons as you say…) in the upper stratosphere, then the Earth would be a snowball. That’s utter nonsense! Ozone depletion is only occurring at some altitudes, at special dates of the year, in very localized regions of the world. And CO2 has nothing to do with it. The amount of O2 is independent of the amount of CO2, as Ozone (O3) could be a function of (1) amount of oxygen in the higher parts of the stratosphere --45 km and up-- and (2) Enough UV-C radiation able to dissociate oxygen molecules. I would advise you to go back to school and learn your chemistry again (or read with a greater attention wikipedia). Ozone is the result of short wavelength radiation (UV-C, 230 nanometers and less) hitting oxygen molecules at an altitude above 40 km. Below 40 km the amount of UV-C radiation has decreased and lost its capacity to “split” more oxygen molecules. The radiation present from 40 km down is mostly UV-B and UV-A (besides longer wavelengths, of course, that are not affected by gases in the atmosphere). However, UV-B radiation has energy enough to dissociate ozone making oxygen molecules again –and more ozone molecules too, as oxygen atoms encounter oxygen molecules! There are not chemicals reactions between H2O (water) and ozone (O3). Down at the surface, ozone is produced locally by electric discharges for sterilizing water, because ozone is a highly reactive gas with bactericide properties. You are forgetting (or perhaps you ignored it?) that temperature goes back to space not only by re-radiation (physically it does not happen, but that would take to science forums pages for explaining it) but also and mainly by convection. See those beautiful high white clouds in summer? Thet are so high because convection. Warm air, heated by the sun and the warm surface is going up because it is being pushed from underneath by cold air. Then convection cannot be seen going up and up because water vapor is left behind and no condensation makes clouds to be seen. Man has not the ability or power to upset this delicate balance. At least has not the power exerted by Mother Nature. Mommie Gaia injects in a year more CO2 into the atmosphere than mankind ever did in its whole history on this planet. Mankind used to release 7.000 tons of chlorine contained in CFC annually to the atmosphere, while oceans release 650 MILLION tons of chlorine every year, volcanoes spew 36 MILLION TONS of chlorine, forest fires 8.4 million tons, and so on. Not to mention ocean algae releasing 4.5 million tons of chlorine each year. So, who’s upsetting this delicate balance? Mankind or Mommie Gaia? That’s a good question. Did you learn something at all in your classes? Or you were just smoking pot and making passes at your female companion students? :m: Please Register or Log in to view the hidden image! Your other posts will be answered later. Don't go away.