Contrails are those long white clouds that form in the wake of an airplane flying at altitude. What causes these contrails and what are they made of? Learn the answer to this question in this article from HowStuffWorks.
WHAT'S INSIDE: FLIGHT
Airline pilots have an amazing job with huge responsibilities. Learn what it's like to be a pilot and what it takes to make it in this highly competitive profession.
The loops, rolls and rocketlike maneuvers these stunt pilots perform are astounding. What's the history behind aerobatics and how do they perform those tricks in the sky?