This week on Valley Edition KVPR's Kerry Klein reports on air quality in Central California. Fresno City Councilmember Lee Brandalso joins the program to talk about water issues in Fresno and other topics. Later we are joined by University of Colorado Professor Sarah Horton about her study and bookfocused on the phenomena "Ghost Workers." Ending the show Debbie Milla joins the program to chat about The Discovery Center and events taking place there this summer including a series of star parties.