Scientists vs. Hairspray: The Battle for the Ozone Layer

In 1974, two chemists made a shocking discovery: everyday chemicals used in refrigerators, air conditioners, and aerosol spray cans might be destroying the Earth’s ozone layer.
Their research revealed that chlorofluorocarbons — known as CFCs — could drift high into the atmosphere and trigger chemical reactions that break apart ozone molecules, weakening the planet’s natural shield against harmful ultraviolet radiation.
In this episode of The Strange History Podcast, we explore the strange and surprising history of the ozone layer crisis. From the groundbreaking research of Mario Molina and F. Sherwood Rowland to the discovery of the Antarctic ozone hole and the global response through the Montreal Protocol, this episode tells the story of how humanity accidentally altered the chemistry of the sky.
Blending environmental history, atmospheric science, and one of the most successful international treaties ever signed, this episode reveals how something as ordinary as aerosol spray cans once threatened the entire planet.
If you enjoy strange science history, environmental discoveries, atmospheric mysteries, and surprising moments where science changed the world, this episode belongs in your queue.


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