There is a middle class emerging in Latin America — far south of the white picket fences and the syndicated episodes of "Leave It To Beaver." But who is this middle class? What do they want? And what will this group mean for the world market? Answering these questions, and more, are Christopher Sabatini, editor-in-chief of Americas Quarterly, and Jamele Rigolini, senior economist at the World Bank.

The fallout continues in Massachusetts where a former crime lab chemist allegedly tampered with evidence from drug tests for years. Authorities say Annie Dookhan may have tampered with evidence in up to 40,000 cases. Sarah Birnbaum, state house reporter for WGBH Radio in Boston, has been covering the Annie Dookhan drug lab scandal.

A middle class is emerging in Latin America, but does more opportunity exist in the United States for Latinos? Or less? Eileen Diaz-McConnell, an associate professor at Arizona State University, specializes in Latino demographics, particularly on homeownership rates, a central part of any American dream definition.

Worries about the fiscal cliff are beginning to sound like predictions from the Mayan calendar. Dave Weigel, political reporter from Slate, tries to demystify the smoke and mirrors of Washington politics.

The year of 1965 marked a turning point in American history, as the War in Vietnam escalated, Malcom X was assassinated, and the Civil Rights coalition began to fracture. Brown University historian James T. Patterson describes these developments, and how 1965 changed the course of American history, in "The Eve of Destruction: How 1965 Transformed America."

Ira Glass has perhaps one of the most recognizable voices in America. But, like most of us in radio, he is rarely visible to his audience. He decided to come out from behind the curtain for a special program, “The Invisible Made Visible,” which was on stage in front of a live audience, and broadcast live to movie theaters across the country.