Super Pollutant Sprint Showcases Methane Wins From California to Rwanda Ahead of COP31

The Climate Group's Super Pollutant Sprint at Climate Week NYC made a forceful case that cutting methane, black carbon, and HFCs is no longer just a climate obligation — it's an economic investment with a 15-to-1 payoff. With California's $100 million satellite monitoring network as a backdrop, leaders from Rwanda, Mexico, and Brazil showed what measurable super pollutant action looks like in practice, while Catalonia formally joined the coalition.

• CCAC report finds $15 in benefits for every $1 invested in clean air and super pollutant action
• California deploys first-of-its-kind methane satellite network with public dashboard and enforcement
• Rwanda reports 15% reduction in PM2.5 after two years of vehicle testing; will host Kigali Amendment anniversary
• Mato Grosso, Brazil, has cut deforestation 90% while nearly tripling soy output — now targeting cattle methane
• Jalisco, Mexico, runs 43 farmer field schools and is shifting sugarcane from burning to green harvesting
• Catalonia joins Subnational Methane Action Coalition, targeting agriculture and waste methane (40% of its emissions)

The basics: The Climate and Clean Air Coalition and UNEP released a "Hidden Assets" economic assessment analyzing 25 measures for reducing super pollutants — methane, black carbon, and hydrofluorocarbons — finding that the returns dwarf the costs.