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Susan Solomon explaining why the United States held disproportionate leverage in negotiating the global CFC ban: consumer boycotts had already killed the domestic market for the chemicals, so exporters couldn't rely on selling into it regardless of what the treaty said.
Atmospheric chemist Susan Solomon, who discovered the chemical cause of the Antarctic ozone hole, describing which country ended up driving the hardest for the Montreal Protocol's global CFC phase-out. It happened during the deregulation-minded Reagan era, which is part of why she calls it surprising.