Is California's ban on same-sex marriage constitutional? The federal 9th Circuit Court of Appeals is expected to have its say Tuesday with a historic ruling on Proposition 8. KQED News presents a live, hour-long special on the decision. We'll take listeners' calls, talk with legal experts and proponents on both sides of the issue as well as discuss the possibility of Proposition 8 heading to the U.S. Supreme Court.

We discuss the 9th Circuit Court of Appeals ruling on the legality of California's voter-approved ban on same-sex marriage, expected Tuesday. The court will decide whether to uphold U.S. District Judge Vaughn Walker's decision last year that the ban is unconstitutional. Whatever the decision, it will likely be appealed to the U.S. Supreme Court.

The San Francisco Board of Supervisors will vote on whether to expand the city's ban on plastic bags Tuesday. The new plan would ban the bags from all businesses -- not just large grocery stores and pharmacies -- and it would impose a surcharge on other bags.

Internet activist and Google marketing executive Wael Ghonim was thrust into the international spotlight last year as his Facebook page helped spark the Egyptian uprising. He joins us to talk about his new book "Revolution 2.0," and about recent political developments in Egypt.

Debbie Duncan's daughter has had to avoid eating gluten virtually her entire life.

Occupy Wall Street protesters marched through downtown Oakland today to the Wiley Manuel Courthouse to bring attention to mass arrests, and what they call police repression. But some residents fed up with protesters also showed up.

Nurses, teachers and other groups launched a campaign today to qualify a tax hike on millionaires for the fall ballot. Backers will need to gather more than half a million signatures by this summer -- but they say polls show the measure will be popular.

California is close to rejoining the Department of Justice and other states in backing a settlement with banks over foreclosure abuses. But the state, along with other holdouts, had not joined the settlement by a deadline set for this evening by the nation's state attorneys general. And a deal might not be finalized for days.