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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 1)

02:20

Wayne County Prosecutor Kym Worthy started a Conviction Integrity Unit three years ago to examine claims of innocence and look for those who are wrongfully imprisoned. That means investigating the work of her own office. “It’s not about us. It’s about justice,” Worthy tells NBC News’ Kate Snow. The unit has helped 29 people so far, making it stand out among a growing number of CIUs across the country.