First, take a look at how light pollution actually makes our air worse. A new study by the National Oceanic and Atmospheric Administration shows how bright lights in the city at night prevent an important molecule from scrubbing ozone from the air. Next, an update on our original investigation, "Show Me the Money." Is the city selling our public park space to advertisers? Finally, go backstage with the Los Angeles Ballet as the dancers prepare for opening night of the company's first mjor full-length dramatic work, "Giselle."