Guardian: At least one in 10 new homes in Britain do not meet legal requirements for energy efficiency, condemning tens of thousands of householders to higher energy bills, and exacerbating climate change. The government has identified improving households’ energy efficiency as the best way to reduce carbon emissions at the same time as keeping a lid on rising utility bills. Since April 2008, all new homes have had to meet tough standards on draught proofing, lighting and heating. All …