Emissions from cars, lorries, planes and power stations causes 13,000 premature deaths in the UK each year, according to a new study by MIT researchers. The research team analyzed data from 2005, the most recent year for which information is available. They found that among the various sources of emissions in the country, car and truck exhaust was the single greatest contributor to premature death, affecting some 3,300 people per year. By comparison, the researchers note, fewer than 3,000 Britons died in road accidents in 2005.