BP has promised to be more open about its impact on climate change after 98% of shareholders backed a resolution calling for greater transparency at the fossil fuel group.The company committed to publishing more information on a range of issues, including whether the value of its oil and gas reserves will be damaged by limits on carbon emissions; its investments in low-carbon technology; the scale of carbon dioxide emissions from its operations; the linking of executive pay to greenhouse gas reduction; and its lobbying on climate change...