"the atmosphere and oceans are critical for life on this planet, is it really acceptable to continue to treat them as dumping grounds?"
Well no, but as far as CO2 is concerned then either Earth seems to have shown that it has a coping mechanism for its regulation or that CO2 concentrations do not affect the temperature of the atmosphere as the AGW models forecast.
Imagine Australia as being completely forested with mature deciduous beech-like trees (eucalypts were only about 5%) - how much CO2 was released when they were all burnt? And the ME and Sahara? This isn't justification for the current (or past!) destruction of forest, but to demonstrate that the Earth is adaptable, as far as CO2 is concerned. Don't forget that 500m years ago the levels were 6,000ppm and the Earth's biodiversity was booming - and the Earth did not fry. The yet doomsters would have you believe that 350, or 400, or definitely 450 are critical, life-as-we-know-it ending levels.
As far as dumping unnatural waste, i.e. chemical or nuclear wastes into the oceans or atmosphere, then definitely not!
