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    Jon Stewart fights to help veterans exposed to burn pits (Part 1)

    04:10
  • Jon Stewart fights to help veterans exposed to burn pits (Part 2)

    02:53
  • Inside the effort to feed Florida's manatees (Part 1)

    02:58
  • Inside the effort to feed Florida's manatees (Part 2)

    01:02
  • 80 years after Pearl Harbor, survivors reflect on the day that changed history (Part 1)

    06:28
  • 80 years after Pearl Harbor, survivors reflect on the day that changed history (Part 2)

    06:29
  • Musicians spreading holiday cheer in hospitals across U.S. (Part 1)

    01:43
  • Musicians spreading holiday cheer in hospitals across U.S. (Part 2)

    02:17
  • Blood test detects over 50 types of cancer (Part 1)

    02:31
  • Blood test detects over 50 types of cancer (Part 2)

    01:28
  • How the elite U.S. Forest Service hotshots battle wildfires (Part 1)

    02:05
  • How the elite U.S. Forest Service hotshots battle wildfires (Part 2)

    02:08
  • Climate change in Guatemala: Between starvation and migration (Part 1)

    06:51
  • Climate change in Guatemala: Between starvation and migration (Part 2)

    05:11
  • A look at St. Louis' iconic Gateway Arch (Part 1)

    02:01
  • A look at St. Louis' iconic Gateway Arch (Part 2)

    01:58
  • Extended interview: Rita Moreno and Ariana DeBose on ‘West Side Story’ remake (Part 1)

    03:03
  • Extended interview: Rita Moreno and Ariana DeBose on ‘West Side Story’ remake (Part 2)

    03:18
  • Black playwrights take center stage on Broadway (Part 1)

    03:46
  • Black playwrights take center stage on Broadway (Part 2)

    02:24

Prosecutor on a mission to right wrongful convictions (Part 2)

03:27

As a college student, Kevin Harrington was arrested on a murder charge and thought he’d be quickly released when authorities realized their mistake. It took almost 18 years. Harrington tells NBC News’ Kate Snow that he was apprehensive at first when the Wayne County Conviction Integrity Unit began looking into his case, as that prosecutor’s office put him in prison. Now he’s working to bring about change.