California declared war on smog in the 1970s. The knock-on effects were huge.
A professor of environmental law explores the 1970 Clean Air Act and it how it has effected car emissions and smog in the decades since.
Original Source
Read the full article at Livescience →KhanList aggregates and links to publicly available news content. We do not host full articles from third-party sources. Always verify important information with original sources.