Reuters: Britain will submit its final plan for improving air quality to the European Commission on Thursday after levels of the pollutant nitrogen dioxide, mostly from diesel vehicles, were found to have breached EU limits. The UK Supreme Court earlier this year ordered the government to submit the new plans for fighting the harmful pollutant by late December. Under the British government's plan, "Clean Air Zones" will be introduced in areas of Birmingham, Leeds, Nottingham, Derby and Southampton where...