The document summarizes mitigation activities and potentials in 3 countries and the EU. Brazil reduced emissions 10% through biofuels and efficiency programs. China reduced emissions growth by 250 million tons through policies promoting efficiency, fuel switching, and afforestation. India reduced emissions 5% in 2000 through economic restructuring, enforcement of clean air laws, and renewable programs, with potential for 120 million ton reduction through efficiency and fuel switching. The EU aims to reduce emissions 20% by 2020 through initiatives like its internal energy market and efficiency programs.