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.
The environmental groups created an online tool showing how much each country should cut emissions and how much money should be given to developing countries not fully responsible for global warming but that would be devastated by climate change nonetheless.