Since 1932, music lovers have enjoyed free concerts in a natural amphitheater set amidst the redwoods in San Francisco's beloved Sigmund Stern Grove. We look back at the history of the Stern Grove music series, the oldest free festival of its kind in the U.S. We'll also hear a live studio performance by The Family Crest, one of the local bands in this year's lineup.

The British ambassador to the United States, Sir Peter Westmacott, joins us to discuss U.S.-British relations, the upcoming Summer Olympic Games in London, his recent meetings with California's business leaders and a host of other issues.

When Jerry Brown's father Pat Brown was governor of California, the state embarked on a building boom that included freeways, a water system and universities, among other ambitious projects. A newly released documentary directed by Pat Brown's granddaughter looks back on his life and legacy.

We discuss life in Bay Area suburbs in the '50s and '60s with Fred Setterberg, author of "Lunch Bucket Paradise," a novel based on his life. Setterberg grew up in a blue-collar neighborhood in San Leandro in a time of working-class prosperity.

Egypt's political face-off continues, with new delays to the outcome of the presidential election. Meanwhile in Syria, aid teams stood ready to help evacuate people trapped and wounded by fighting in the contested city of Homs. We'll discuss the Egyptian election, the ongoing crisis in Syria and evolving U.S. policy toward the region.

Nearly half a century ago, Rev. Cecil Williams took over as the minister of a small Methodist church in San Francisco's Tenderloin. He went on to transform Glide into a diverse institution committed to inclusiveness and devoted to serving the poor and marginalized. Today, with a budget of over $15 million, Glide provides free meals, health care and other services to thousands of people each day.

Loneliness can cause emotional suffering to people of all ages. But a new study by UCSF researchers, which focused on the question of loneliness and its effects, suggests it is especially harmful to the elderly and raises the risk of health problems and even premature death. We'll talk with the lead researcher about the findings.

Some of the most memorable moments in film history have been shot in San Francisco, from Madeline's plunge into the churning water at Fort Point in Hitchcock's "Vertigo" to Clint Eastwood's Dirty Harry scouring North Beach for a serial killer. A new exhibit at the San Francisco Museum and Historical Society celebrates the city's role in the movies, both as a favorite location and as creative hub. What are your picks for SF's greatest moments on celluloid?

Washington Post columnist E.J. Dionne says the story of American individualism has been oversold. He says throughout our country's history, Americans have successfully balanced an emphasis on individual liberties with the needs of community. But in his new book "Our Divided Political Heart," Dionne argues that the focus in politics on the radical individual and a limited role of government has poisoned the national discourse, and that it's time to emphasize the more communal-minded virtues that also define Americans.

We look to the heavens with local astronomers Andrew Fraknoi and David Morrison. They'll discuss black holes, eclipses, Saturn's moons and the search for extraterrestrial life -- and we'll take your questions on all things astronomical.

About 800,000 undocumented immigrants got good news on Friday, when President Obama announced a new policy that looks like a vestige of the Dream Act. The change means that some immigrants age 30 or younger who came to the U.S. before they turned 16 will be given work visas and no longer face the threat of deportation. We discuss the policy shift with supporters and critics.