Three weeks after a massive fire at Chevron's oil refinery in Richmond, there are still a lot of open questions. What caused the unit to fail? Why was the emergency alert system so slow to engage? At a public meeting Monday night, some of the most pressing questions -- and accusations -- were leveled at the Bay Area Air Quality Management District. Reporter: Mina Kim
Most public education systems in the U.S. begin in kindergarten. But that's changing in California, where families can sign up for a new grade called transitional kindergarten or "T.K." for short. Reporter: Ana Tintocalis
End Music: "All Good Naysayers, Speak Up! Or Forever Hold Your Peace!" by Sufjan Stevens, from the CD "Greetings from Michigan: The Great Lakes State" (Asthmatic Kitty Records)
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