eir current value – a four-fold reduction in current global emissions.Р Thus, to limit dangerous climatic change, annual emissions to the atmosphere of CO2 and other greenhouse gases will need to be greatly curtailed, unless geo-engineering or carbon sequestration techniques can be essfully deployed in time. Equal emissions per capita for all countries, as advocated by ‘contraction and convergence’ proponents , are likely to be the only acceptable proposal, since it is improbable that industrialising countries such as China or India will permanently accept lower per capita emissions than the already industrialised countries. They could go further, and demand parity in cumulative per capita emissions over the past century for CO2, a long-lived gas. Such an approach would require the already
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