Checkmate is a position in Chess, in which a player's king is in a line of attack by an opponent's piece and cannot escape check.
The new study focused on 14 measures with the greatest climate benefit. All 14 would curb the release of either black carbon or methane, pollutants that exacerbate climate change and damage human or plant health either directly or by leading to ozone formation.
Ironically, the only way to really find out if sunspots and solar wind are playing a larger role in climate change than most scientists now believe would be to significantly reduce our carbon emissions.