The economics of CO2 capture and storage in relation to the possibility of significant leakage of CO2 from geological reservoirs once this greenhouse gas has been stored artificially underground will be among the main determinants of whether CCS can significantly contribute to a deep cut in...

Governments worldwide have agreed that international climate policy should aim to limit the increase of global mean temperature to less than 2°C with respect to pre-industrial levels. The purpose of this paper is to analyse the emission reductions and related energy system changes in various...

If dangerous and irreversible climatic events are to be avoided, global average temperature should not increase by more than 2°C above pre-industrial levels. In order to achieve such a global target, a mitigation pathway has to limit global emissions to about 50 percent below 1990 levels by...