Bill Nye
Bill Nye The Science Guy on Blood and Circulation
Did you know that high-speed aviators need to wear a special g-suit in order to keep blood flowing to their brains when experiencing intense acceleration forces? Bill Nye takes a flight in such a situation. After his trip, two facts...
NASA
Nasa: The Law of Action and Reaction: Newton's Third Law
Learn about Newton's third law of motion in this brief video clip. Watch as scientists apply this law to aerospace and how a jet engine works to move aircrafts forward. [12:09]