NASA and the Comparative Aircraft Flight Efficiency (CAFE) Foundation of Santa Rosa, Calif., will hold the 2011 Green Flight Challenge, sponsored by Google, at the Charles M. Schulz Sonoma County Airport in Santa Rosa from Sept. 25 to Oct. 1. The competition’s goal is to advance technologies in fuel efficiency and reduced emissions with cleaner renewable fuels and electric aircraft. (www.p3air.com) 更多...