The nation's 250th anniversary arrives with a call for year-round community service

The U.S. Semiquincentennial Commission wants to turn America's 250th birthday celebration into the country's single biggest year for volunteering. Just 28% of Americans said they volunteered time to a religious or secular charitable organization this year, according to a December AP-NORC poll. Organizers don't know how many service hours they need to set the record and aren't targeting a specific number.