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I find it unlikely that early cars were an improvement over horses with regard to air quality. The catalytic converter wasn't available at commercial scale unti
by bob1029 1y ago
I find it unlikely that early cars were an improvement over horses with regard to air quality. The catalytic converter wasn't available at commercial scale until 1973.
- dredmorbius 1y agoLead was the bigger problem. Introduced in the 1920s. (Tetraethyl lead was identified as an additive in 1921, its commercial production lagged by a few years, see: <https://en.wikipedia.org/wiki/Tetraethyllead https://en.wikipedia.org/wiki/Tetraethyllead>.)
- BurningFrog 1y agoI wasn't around, but my understanding is that whole cities stank of horse shit & piss. Aside from the unpleasantness, that's a health hazard of it's own.