Environmental Economics Concepts Environmental Economics Concepts 2XCO2 the doubling in the atmosphere of the carbon dioxide equivalent of all gases in terms of their radiative impact, relative to pre-industrial times. This is almost the same as doubling the concentration of CO2 in the atmosphere, relative to pre-industrial times. We currently expect this to happen in about 2030.
Some diseases develop many years after individuals are exposed to toxic chemicals.
In such cases, it takes longer testing to prove that a compound is safe. The idea that polluters should pay in proportion to their contribution to pollution and resulting damages. That is to say that damages gradually rise over a wide range of emissions.