Ed Yost own interests turned toward reviving the lost practice of manned hot-air ballooning. This technology had first been invented in France by in the late 18th century by pioneers led by the Montgolfier brothers, but under the Montgolfier system, the balloon's air was heated by a ground fire prior to the balloon being released. The inherent danger of this type of balloon flight led to the system being abandoned when hydrogen and later helium became available. One of Yost's key engineering insights was that a hot-air balloon could be made to carry its own fuel. The invention of relatively light burners
Duck Dodgers and the Return of the 24½th Century Duck Dodgers and the Return of the 24½th Century Duck Dodgers and the Return of the 24½ Century is a 1980 cartoon starring Daffy Duck, Porky Pig and Marvin the Martian. It is the sequel to the 1953 cartoon "Duck Dodgers in the 24½th Century". It was the first Daffy and Porky cartoon since 1965. This cartoon first premiered on November 20, 1980, as part of an animated CBS television special called "Daffy Duck's Thanks-for-Giving Special", with scenes that would later be cut when this cartoon was reformatted as a short. The theme tune is an orchestral version of Frédéric