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
The Man Who Invented Christmas (film) with an average rating of 6.3/10. The website's critical consensus reads, ""The Man Who Invented Christmas" adds holiday magic to the writing of "A Christmas Carol", putting a sweetly revisionist spin on the story behind a classic yuletide tale." On Metacritic, which assigns a normalized rating to reviews, the film has a weighted average score 60 out of 100, based 32 critics, indicating "mixed or average reviews". The Man Who Invented Christmas (film) The Man Who Invented Christmas is a 2017 biographical drama film directed by Bharat Nalluri and written by Susan Coyne based on the book of the same