Gas cookers should be fitted with health warnings, according to a report that has found the appliances fill a kitchen with air pollution that breaks recommended safe levels.
Researchers rigged monitoring equipment in more than 280 homes — 40 in the UK — as well as France, Spain, Italy, the Netherlands, Romania and Slovakia.
More than half of homes using gas hobs and gas ovens in the experiment breached the World Health Organization (WHO) recommended maximum level of nitrogen dioxide