About 15 days of emissions from the richest American was equal to a lifetime of emissions for someone in the poorest 10 percent in America, research found.

The paper is here

Thanks to @KoboldCoterie@pawb.social for highlighting this bit:

Then there were “super-emitters” with extremely high overall greenhouse gas emissions, corresponding to about the top 0.1 percent of households. About 15 days of emissions from a super-emitter was equal to a lifetime of emissions for someone in the poorest 10 percent in America.