The following submission statement was provided by /u/aRationalMoose:

SS: The Global Carbon Budget, a forecast of the sources of greenhouse-gas emissions and the sinks which absorb it, showed that growth in carbon emissions is slowing (see chart). In the early 2000s the rate at which humans produced these pollutants increased by about 3% a year. In the past decade it has fallen to 0.5%.

Please reply to OP's comment here: https://old.reddit.com/r/Futurology/comments/yvw6yw/a_rare_reason_for_optimism_about_climate_change/iwgar8d/