This is part of a monthly series highlighting Arizona's climate leaders and answering readers' climate-related questions. The stories, which appear in print and online the first Sunday of the month, ...

Dear Eric: Over the past few years, more and more of my long-time friends have vanished from my life. One sent a message reading “I am retired,” and when asked how she was enjoying her retirement, ...

Hazel Chandler was working on clean air activism in the 1960s when she learned about the threats of a changing climate. She took that up as part of her work. She helped spread the word at the first ...