From the early days of hot air ballooning to supersonic aircraft, High Frontier chronicles the history of flight in Pennsylvania. Early experimentation with lig

Part of the excitement in boundary-layer meteorology is the challenge associated with turbulent flow - one of the unsolved problems in classical physics. An add

Launched in 1939, the Civilian Pilot Training Program (CPTP) was one of the largest government-sponsored vocational education programs of its time. In To Fill t