CO2 emissions

We've been trying to bring down CO2 emissions in the US for years, so how is it going? 

U.S. population has nearly doubled since 1959 (177m then, 323m in 2016). But carbon emissions have declined. They peaked in 1970, came down some from 1980 to 2010, and in 2016 CO2 emissions per capita in America were the lowest they have been since 1959.

It's thought to be mostly the result of using more natural gas and less coal for energy.

(cont'd tomorrow)