Oil and gas firms 'have had far worse climate impact than thought'

Study indicates human fossil methane emissions have been underestimated by up to 40%

The oil and gas industry has had a far worse impact on the climate than previously believed, according to a study indicating that human emissions of fossil methane have been underestimated by up to 40%.

Although the research will add to pressure on fossil fuel companies, scientists said there was cause for hope because it showed a big extra benefit could come from tighter regulation of the industry and a faster shift towards renewable energy.