Pollution was worse back then, look up smog in the 70s. We’ve introduced catalytic converters, emissions standards, etc. Most people now question why we need clean air laws because we have clean air, much like people thinking we don’t need vaccines because those diseases aren’t around.
Pollution was worse back then, look up smog in the 70s. We’ve introduced catalytic converters, emissions standards, etc. Most people now question why we need clean air laws because we have clean air, much like people thinking we don’t need vaccines because those diseases aren’t around.
https://en.wikipedia.org/wiki/Clean_Air_Act_(United_States)
Which is funny because those diseases are still around since they flare up when people stop taking vaccines.