Tackling an Around-the-World Plane Flight - Without Fossil Fuel

During the 1950s through the 1960s there was a Lockheed plant about 50 miles north of Atlanta where they built a reactor and conducted experiments toward making a nuclear powered aircraft. Eventually they decided there was no way to adequately shield the reactor with lightweight materials in order to build a plane that could fly.

In a different program there was a series of tests where a small nuclear reactor was flown on an aircraft, but the aircraft was conventially powered, not powered by the reactor.