
Oddlet: Thomas Midgley Jr. Β· 1 min read
Sep 29, 2026
The Man With an Instinct for the Regrettable
What are the odds that the same man invented leaded gasoline and the chemical that punched a hole in the ozone layer?
Thomas Midgley Jr. was, on paper, one of the great American inventors. He graduated from Cornell in 1911, held more than a hundred patents, won the Nichols, Perkin, and Priestley Medals, and in 1944 was elected president of the American Chemical Society.
He had a gift for solving problems in ways that created much larger ones.
In December 1921, working under Charles Kettering at General Motors, he discovered that tetraethyl lead stopped engines knocking. When workers at the Bayway refinery began dying in fits of violent insanity, Midgley called a press conference, poured the lead compound over his bare hands, and inhaled the vapor for sixty seconds. He said he could do this every day. He had, the year before, been treated for lead poisoning in Miami.
In 1930 he invented Freon. He introduced it to the American Chemical Society by inhaling a lungful and exhaling it onto a lit candle, which went out. Shortly after, he was made a vice president.
In 1940, at fifty-one, he caught polio and lost the use of his legs. He designed a system of ropes and pulleys above his bed so he could hoist himself upright each morning.
On November 2, 1944, it strangled him.
He finally invented something that only harmed one person.
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- Wikipedia β Thomas Midgley Jr. β Comprehensive biography covering birth/death dates and locations, Cornell education, GM career under Kettering, invention of TEL and Freon, the 1924 TEL press-conference demonstration, the Bayway worker deaths, patents and awards, polio in 1940, rope-and-pulley device, and coroner's suicide ruling; also sources the J.R. McNeill and Bill Bryson quotes.
- Smithsonian Magazine β One Man Invented Two of the Deadliest Substances of the 20th Century β Confirms the 117-patent figure, Priestley Medal (1941), 1930 ACS candle demonstration of Freon, and death entangled in his rope-and-pulley device.
- CNN β Thomas Midgley Jr.: The man who almost destroyed the planet (twice) (May 24, 2024) β Overview of his two catastrophic inventions, TEL toxicity known during development, and posthumous environmental legacy.
- American Chemical Society β Priestley Medalists 1941: Thomas Midgley Jr. β Primary ACS biographical sketch supporting his 1941 Priestley Medal and 1944 election as ACS president.
- NPR β The World Has Finally Stopped Using Leaded Gasoline. Algeria Used The Last Stockpile (Aug 30, 2021)

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