Analysis shared with BBC Verifyhas revealed one of the worst methane leaks ever recorded, which occurred last year at a remote well in Kazakhstan. The analysis estimated that 127,000 tonnes of methane escaped into the atmosphere when a blowout ignited a fire that burned for over six months. Methane, a potent greenhouse gas, is far more impactful than carbon dioxide in terms of its effect on global warming. The company that owns the well, Buzachi Neft, has disputed the claim, denying a significant methane release. However, according to the US Environmental Protection Agency’s Greenhouse Gas Equ…