Weary of war, Americans increasingly balk at military intervention. Does this reflect a new strain of isolationism or just doubts about the effectiveness of using force in the Middle East?
They call it the 'sharing economy': people going online to rent out rooms in their homes, set up informal ride-shares, or repair car brakes in your driveway. Even as the trend booms, it is meeting resistance from established businesses, city officials, and even neighbors. Can they stop it?