Political and ethnic violence in Sudan's Darfur region has left hundreds of thousands dead and millions more displaced since 2003. Go behind the headlines with a special National Geographic video series detailing the countless lives that have been irrevocably changed by the conflict—from journalists to war veterans, photographers to refugees.

Part One: Country in Crisis (Sudan Overview) The brutal conflict between government-sponsored militias and rebel groups in Sudan's Darfur region has been called "one of the worst humanitarian crises of the 21st century."

Part Two: The Lost Boy When Sudan's militias began slaughtering young boys, thousands fled for their lives. Now some of these "lost boys," like John Dau, have made it to the U.S.—and a second chance at life.

Part Three: The Reporter Remote, complicated, and dangerous, the conflict in Darfur is extremely difficult for journalists to cover. But when National Geographic's Paul Salopek was taken prisoner, the stakes were life and death.

Part Four: The Witness The world's great war photographers bear witness to the carnage in Darfur with a traveling exhibition of stunning images.

Part Five: The War Child By the age of eight, Emmanual Jal was an experienced combat veteran in the Sudanese civil war. Today he is a rapper and a rising star on the world music scene. How did this war child trade in his gun for a microphone?

Part Six: The Activist Mark Hanis, the grandson of four Holocaust survivors, has said "never again" to genocide. His Genocide Intervention Network is helping to save the people of Darfur.