How do airplanes fly?
Why does an airplane not fall out of the sky?
Why does an airplane not fall out of the sky?
http://www.livescience.com/7109-planes-fly.htm
Why do people get air sickness?
http://aviation.about.com/od/Pilot-Training/a/Airsick-How-To-Prevent-And-Treat-Motion-Sickness-While-Flying.htm