Home » BBC News - Technology » technology news » Diesels more polluting below 18C, research suggests Diesels more polluting below 18C, research suggests Unknown 12:40 AM BBC News - Technology technology news Pollution from many popular diesel cars is much worse when it is colder than 18C outside, new research suggests. from BBC News - Technology http://ift.tt/28MuobV Share: Facebook Twitter Google+ StumbleUpon Digg Delicious LinkedIn Reddit Technorati