From solitary confinement to modern-day slavery, humans always seem to struggle with the concept of liberty and who, exactly, deserves to be free.
Conflict, harmony and Rwanda's horrific civil war are the focus of this episode as the series explores why wars lead to a troubled version of peace.
Love means different things to various people but everyone seems to crave it. From arranged marriages to orphanages, a deeper look at a primal force.
Intolerance leads to "us" versus "them," but who decided to put everyone in a separate box? This episode examines overcoming the fear of outsiders.
Former President Bill Clinton discusses how it feels to have the power to change hundreds of millions of lives. Others discuss the mass power of humans.
Whistle-blowers aren't all bad -- many change the course of history. This episode examines how rebellion often begets a better global future.