Similar Material g80 4/8 p. 26 New Aviation Fuel? A Milestone in Aviation Awake!—1989 What New Developments in Energy? Awake!—2005 What Does It Take to Keep Them Flying? Awake!—1999 Fossil Fuels Awake!—1980 A Source of Energy Awake!—1970 What Can Be Done? Awake!—1989 Oil—Do We Have Any Alternatives? Awake!—1989 Eyes in the Sky Awake!—1987 Sky-High—and Confident! Awake!—1984 How Did the Airplane Arrive? Awake!—1999