As a child growing up in Southern California, Ann Carlson remembers mountains obscured by haze and yellowish brown air that stung her eyes and made her lungs ache. It was just “the environment,” her stepfather would remark to her, sheepishly.  It would be decades before Carlson learned the complicated causes of the noxious air, what … Continue reading Smog, Lies and Pineapples: How LA Cleaned up Its Air and What’s Left to Do