Associated Press: The Environmental Protection Agency announced Monday that it would control — for the first time — short-lived spikes of an air pollutant common along major roads and linked to respiratory problems. The new national standard sets a one-hour limit for nitrogen dioxide, a gas created by emissions from automobiles, factories and coal-fired power plants that peaks along highways and near cities. Along with the new limit, the EPA is also requiring at least 40 new monitors in cities …