International

Visiting national parks before climate changes them

Air Date: June 5, 2012

Transit of Venus: its history & transit methods today

Air Date: June 1, 2012

Friendship’s evolution, in us & our animal friends

Air Date: May 28, 2012

National news roundup

Air Date: May 25, 2012

The Great Animal Orchestra: finding the music in nature

Air Date: May 23, 2012

Journalist Steve Coll looks at ExxonMobil’s private empire and American power

Air Date: May 22, 2012

James Fallows on ‘China Airborne’

Air Date: May 21, 2012

Combat advising in Iraq with 3rd-generation Marine Owen West

Air Date: May 16, 2012

Jose Antonio Vargas: Pulitzer Prize-winning undocumented immigrant

Air Date: May 15, 2012

Afghanistan options, with Andrew Bacevich & Bing West

Air Date: May 7, 2012

Garbology: a look at America’s trash habit

Air Date: April 26, 2012

The Race to the South Pole: Roald Amundsen vs. Robert Falcon Scott

Air Date: April 6, 2012

A Breeze of Hope & justice for sexual abuse survivors

Air Date: April 6, 2012

Cuba, the Pope and U.S. relations

Air Date: April 5, 2012

High-seas slavery: Was your seafood caught by captives?

Air Date: March 27, 2012