Overall, the new measures would lower
global anthropogenic
emissions of
methane by 50 % and of black carbon aerosols, also known as soot, by 80 %.
In other words, the U.S. is leading all industrialized nations in CO2 reductions — the greenhouse gas responsible for three - fourths of
global warming, according to this report — and is also reducing
methane emissions that represent a relatively minuscule contribution to the
overall GHG radiative forcing (i.e.
global warming) identified in this report.