On Tuesday, ahead of the United Nations conference on Climate Change to be held in Paris this autumn, Catalonia signed a 'Memorandum of Understanding' in Sacramento (California), together with 11 other US states, Mexican states, Canadian provinces and regional governments. By taking this step, the Catalan Government and the other signatories commit to cut total greenhouse emissions to 80%-95% below 1990 levels by 2050 or to cut per capita emissions to below 2 metric tons during the same timeframe. The 12 founding signatories to the agreement span seven countries and three continents, with a total population of 100 million people and about $4.5 trillion in combined GDP. Apart from Catalonia, the signatories include: California, Vermont, Oregon and Washington (USA); Acre (Brazil); Baden-Württemberg (Germany); Baja California and Jalisco (Mexico); Ontario and British Columbia (Canada); and Wales (UK). More states, nations and cities are expected to join the agreement in the coming months.