Environmentalists are threatening legal action in an attempt to halt the development of a new gasfield in the North Sea that has been given the green light by the UK government. Climate experts reacted with anger after the government announced it had given the Jackdaw field, to be developed by the oil multinational Shell, “final regulatory approval” on Wednesday. The business secretary, Kwasi Kwarteng, said: “Jackdaw gasfield – originally licensed in 1970 – has today received final regulatory approval. We’re turbocharging renewables and nuclear but we are also realistic about our energy needs now. Let’s source more of the gas...