The History of Freon - The Second Disaster from the Inventor of Leaded Gas

In April 1930, a chemist stood before a room full of scientists in Atlanta, took a deep breath of a brand-new gas, and slowly blew out a candle. It was, he said, the safest refrigerant ever made. He was right — and that was the problem. His name was Thomas Midgley Jr., the same man who had put lead into gasoline. Home refrigerators of the 1920s leaked ammonia, sulfur dioxide and methyl chloride, and families were dying in their sleep. Midgley's team found the answer in three days: a molecule of carbon, chlorine and fluorine so stable that nothing could break it. Freon made the modern kitchen, air conditioning and the aerosol can possible. But because nothing on the ground could destroy it, it drifted up, year after year, to the stratosphere — where ultraviolet light finally tore it apart and released chlorine that devoured ozone. In 1985, three British scientists in Antarctica found that the shield over the South Pole had lost a third of its ozone. What came next was something rare: the whole world agreed to fix it. In this video you'll see: • Why the refrigerators of the 1920s were called "killer iceboxes" — and what Einstein tried to do • How Midgley's team found Freon by reading the periodic table like a map • The wartime "bug bomb" that gave birth to the aerosol can • How James Lovelock's detector found CFCs from England to Antarctica • Molina and Rowland's discovery — and DuPont's promise to Congress in 1974 • The Halley Bay measurements, the ER-2 flights and the "smoking gun" graph • The Montreal Protocol, the illegal CFCs traced to China in 2018, and when the hole will close 👍 If you enjoyed this, leave a LIKE — it's what keeps this channel growing. 🔔 SUBSCRIBE and turn on the bell so you don't miss the next story. 💬 And tell me in the COMMENTS: do you remember hearing about the ozone hole when you were a child? 📍 From Dayton, Ohio, and a meeting in Atlanta to Halley Bay, Antarctica, and the Montreal Protocol. #freon #ozonehole #ozonelayer #cfcs #thomasmidgley #montrealprotocol #chemistry #sciencehistory