> The air is much than it was 40 years ago as well. Few people remember what Los Angeles air looked like in the 1970s But that got cleaned up precisely because

> The air is much than it was 40 years ago as well. Few people remember what Los Angeles air looked like in the 1970s But that got cleaned up precisely because of decisive collective action. Regulations were passed and enforced to clean up the air (some of which are now unfortunately being rolled back)