Boston, as well as the state, has been losing population in the past few years. If those numbers are confirmed by the 2010 federal census, Massachusetts could lose up to two congressional seats, as well as federal money for highway, education, and development programs that are tied to population. Responding to concerns raised by the state's congressional delegation, local mayors, and Secretary of State William F. Galvin, lawmakers included $100,000 in the $25.7 billion state budget last week to pay a University of Massachusetts think tank to start researching the numbers to make sure that as many residents as possible...