Citizens of Shishmaref, Alaska are watching their beaches disappear and their homes fall into the sea. Is it too late to relocate?

How an overzealous forensic pathologist and his odontologist sidekick put innocent Mississippi residents behind bars – and let killers run free.

On the country’s poorest.

"I remember lying on my side, dust everywhere, and I looked down and saw my arms were split open and squirting blood and I had just two bloody stumps above my knees," said Marine 1st Lt. James Byler, 26, who was blown up a few weeks before Mark Litynski. "My first coherent words to my Marines were, 'Hey! check my nuts!'

Three primary reasons: A desire for vengeance, the sanitization of executions and, ironically, the reliability of DNA evidence.