• Conan O'Brien has lost viewers each night since his debut, and on Tuesday David Letterman won the ratings. LAT, Variety
• Twentieth Century Props, the entertainment industry's second-oldest prop house, will close after almost 40 years in North Hollywood. The inventory will be auctioned in July. DN
• After spending more than $7.4 million on a special exhibit, the Los Angeles Zoo will not be getting three rare golden monkeys promised by China in a 2002 trip led by then-Mayor James Hahn. "Our understanding is they [China] were no longer responding to our inquiries," says the head of the zoo commission. DN

More after the jump, and check out the new posts at LA Biz Observed and Native Intelligence.

• L.A.'s city ordinance regulating how long taco and lunch trucks can stay parked was thrown out for not being related to public safety. LAT
• Cadiz still won't say which water agencies have reportedly signed a deal to participate in its Mojave Desert water scheme, and Michael Hiltzik says the whole thing smells as dicey as ever. LAT
• LAX will officially unveil its new system of red stoplights to prevent runway incursions by taxiing planes. LAT, Breeze
• Mayor Villaraigosa has named Dr. Lula Bailey Bolton to the CRA board.
• Temple City's mayor and the other two were indicted as expected on bribery, perjury and other counts. LAT, SGV Tribune
• The Flyaway bus fares are going up to $7 one way between LAX and Van Nuys or Union Station. Breeze
• Former Fox 11 reporter and KFI host Rod Bernsen debuts a web talk show on Talk Radio One Friday from 7 pm to 8 pm Pacific time.
• Former Times staffer in Orange County William Lobdell and ex-Daily Pilot publisher Tom Johnson have launched Daily Voice, a news website for Newport Beach and Costa Mesa. DV
• Preview of tonight's downtown Art Walk. Blogdowntown
• Geoffrey Baum, assistant dean of USC Annenberg and a past president of the Pasadena Area Community College District board, has been nominated for the California Community Colleges Board of Governors.