It's alive! Biochemist and astrobiologist David Deamer describes how life may have begun on Earth, perhaps with a little help from outer space.

Film maker Curt Worden discusses his documentary about Jack Kerouac's novel"Big Sur." Also, writer Robert Sullivan reflects on cross-country car trips.

Developmental psychologist Alison Gopnik has spent decades studying the minds of infants and young children. Her conclusion: babies are smarter, more aware and more caring than scientists previously realized. Also, inventor Joshua Klein on the surprising intelligence of crows.

Developmental psychologist Alison Gopnik has spent decades studying the minds of infants and young children. Her conclusion: babies are smarter, more aware and more caring than scientists previously realized. Also, inventor Joshua Klein on the surprising intelligence of crows.

Two American heirs who grew up wealthy question their good fortune and now advocate greater economic equality. They discuss their own experiences of wealth and the distribution of wealth in the country.

For two decades, environmental activist John Francis travelled America on foot while keeping a vow of silence. Along the way, he got to know a side of himself and this country that few experience. He describes his pilgrimage to host Robert Pollie

In his ongoing look at wealth in America, host Robert Pollie gets an alternative view from Zen abbot Steve Stückey and humanitarian doctor/clown Patch Adams.

Orchestral percussionist Galen Lemmon shares some of the sounds of this year's Cabrillo Festival of Contemporary Music. Featuring marimba, vibes, steel drums, timpani, even a tuned anvil. Then, sacred drums: a visit with Afro-Cuban Batá drummer Michael Spiro.

More than the sum of the parts. Nobel prizewinning physicist Robert Laughlin says nature can't always be reduced to its individual components. Plus, Maestra Marin Alsop of the Cabrillo Festival of Contemporary Music

More than the sum of the parts. Nobel prizewinning physicist Robert Laughlin says nature can't always be reduced to its individual components. Plus, Maestra Marin Alsop of the Cabrillo Festival of Contemporary Music