Achieving an 80 Percent Emissions Cut by 2050

To do its part in keeping climate change to tolerable levels, the United States needs to cut its carbon emissions at least 80 percent below 1990 levels by 2050. That's not just a matter of decarbonizing the electricity sector; it means changes in everything from aviation to steel manufacture, and reducing not only CO2 but also other pollutants like HFCs and black carbon.