This week on Valley Edition, we learn why the valley endured some of the worst air quality in decades, and why more wasn't done to prevent it. We also talk about the weather with meteorologist Sean Boyd. Later in the show we hear about the pros and cons of the proposed new route for high-speed rail through Bakersfield, and we talk with Merced Sun Star reporter Monica Velez about the closure of a network of health clinics last year in the north valley. Finally, we talk with folk singer John McCutcheon ahead of a concert in Fresno Thursday night.