Good point! From https://en.wikipedia.org/wiki/Chlorofluorocarbon https://en.wikipedia.org/wiki/Chlorofluorocarbon: > Because CFCs contribute to ozone depletio

Good point! From https://en.wikipedia.org/wiki/Chlorofluorocarbon https://en.wikipedia.org/wiki/Chlorofluorocarbon: > Because CFCs contribute to ozone depletion in the upper atmosphere, the manufacture of such compounds has been phased out under the Montreal Protocol, and they are being replaced with other products such as hydrofluorocarbons Maybe this success is at least somewhat due to the fact that there is an alternative technology that has very similar utility and cost, but without the significant negative effects. The absence of such an alternative might explain why Asbestos hasn't had similar success. From https://en.wikipedia.org/wiki/Asbestos#Usage_by_industry_and_product_type https://en.wikipedia.org/wiki/Asbestos#Usage_by_industry_and...: > Some countries, such as India, Indonesia, China, Russia and Brazil, have continued widespread use of asbestos.