Political support for a global agreement on methane emissions at the UN climate summit is building slowly, as another 25 countries joined the US and EU-led pledge to cut pollution from the potent greenhouse gas.
With the COP26 climate conference less than a month away, new support from Japan, Canada and Germany took the total to 34 parties, including the European bloc, that will back the pledge to reduce emissions by about a third over the next decade.
However, major emitters including China, India and Brazil are yet to sign up.
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