[VIDEO]: How wings really create lift | Science News | Scoop.it
From www.newscientist.com - January 25, 2012 4:11 AM

How does air flow across a wing to generate lift? Since a wing's top surface is curved, it covers a greater distance compared to the flatter bottom edge. A common explanation is that air moves faster over the top so that it reaches the end of the wing at the same time as the bottom flow, lowering the pressure on the top surface.