how two brothers invented the hot air balloon
"Back in 1782, in Annonay, France, lived Joseph Montgolfier, a dreamer and an inventor who was curious about how everything worked. When one day a gust of wind blew his papers into the fireplace, he noticed that something lifted the pages into the air--and he realized that heat could make things rise. With the help of his brother Etienne, he began to experiment . . . and created the world's first flying machine, sparking the birth of flight. This . . . illustrated picture book tells the story of how his hot-air balloon came to be, King Louis XVI's visit to see it fly, and the three animals--a rooster, a duck, and a sheep--who became its very first passengers"--Provided by publisher.