London (AFP) – BP has agreed to buy US renewable gas producer Archaea for $4.1 billion to help the British oil giant reach net zero carbon emissions by 2050, the pair said Monday. The London-listed energy major is flush with cash after recent surges in oil prices that have triggered calls for the cash-strapped UK government to massively enlarge a windfall tax on British energy giants. Chief executive Bernard Looney said in a statement Monday that the acquisition of Archaea would create “a real leader in the biogas sector, and support our net zero ambition”. Houston-based Archaea produces renew…