Now that humanity is over, what was your favorite century?

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>Research published in January by the National Oceanic and Atmospheric Administration (NOAA) showed that atmospheric concentrations of methane—a greenhouse gas that's 80 times more potent than carbon dioxide over a 20-year period—soared past 1,900 parts per billion in 2021, which ranked as the fourth-warmest year on record.

>As Nature reported Tuesday, "The growth of methane emissions slowed around the turn of the millennium, but began a rapid and mysterious uptick around 2007."

https://www.commondreams.org/news/2022/02/09/scientists-fear-soaring-methane-levels-show-climate-feedback-loop-has-arrived