Biden unveils pledge to slash global methane emissions by 30%

US-led alliance includes 90 countries but China, India and Russia have not joined the methane pact

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US president Joe Biden has unveiled a multinational plan to control methane, regarded by the administration as the single most potent way to combat the climate crisis in the short term.

Leading an alliance of 90 countries, including for the first time Brazil, on Tuesday Biden set out new regulatory measures to limit global methane emissions by 30% from 2020 levels by the end of the decade.