The head of Greenpeace International discusses the politics of global warming and the urgency of environmental activism.

Only weeks after his release from prison, activist Tim DeChristopher talks about the necessity of civil disobedience in the fight for environmental justice.

Veteran activist and organizer Marshall Ganz joins Bill to discuss the power of social movements to effect meaningful change.

Economic equality advocates Rachel LaForest and Madeline Janis share how social action can change both policy and lives.

Newtown parents Francine and David Wheeler talk about how to address gun violence in a way that welcomes diverse viewpoints.

How dangerous chemicals and fracking contaminate our land, our health and the energy debate.

19-year-old activist Zack Kopplin talks about fighting the creep of creationist curricula in public school science classes and publicly-funded vouchers.

Activist Saru Jayaraman marches with restaurant workers struggling to make ends meet and talks about how we can support their fight for a fair wage.

Jessica González-Rojas and Lynn Paltrow join Bill to look at the issues fueling today's reproductive rights debate.

Bill invites Sister Simone Campbell and Robert Royal to discuss faith, politics and the Ryan budget.