00:00 Skywriting is a form of writing in the sky using oil and high horsepower planes, and it originated among World War I flying aces.

04:15 Skywriting was used in the military to send messages and cloak ships, but it became popular for advertising purposes, especially for companies like Lucky Strikes and Pepsi, until television advertising became more prevalent.

08:32 Skywriting was a legitimate form of advertising in the past, but it required ideal weather conditions and was eventually replaced by television advertising.

12:53 Skywriting is considered a lost art that requires a lot of skill and is only known by a handful of people, making it difficult to learn or find information about online.

17:04 Skywriters use small, highly maneuverable planes with high horsepower to generate enough heat to burn off oil and create smoke letters that can be a mile high and up to five miles across, and they have to write the letters backwards because the ground is below them but the people looking up at the message see the sky above them.

20:58 Skywriting messages typically last for a short amount of time, usually around 8 to 10 minutes, and can be seen from a distance even after they dissipate, and the cost of skywriting varies depending on the length of the message, with the most basic message starting at around $1500.

25:00 Digital skywriting, which originated in the 1940s, involves using multiple planes to fly in formation and create messages in the sky using a computer program to control the release of puffs of smoke.

29:38 Skywriting is expensive because it requires hiring a minimum of five planes, but digital skywriting is making a comeback and there is a patent for inserting fake skywriting messages into photos.

33:31 A listener shares a story about being vomited on by a vulture and describes the intense smell and experience.