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    Atlanta mayor speaks out against gun violence after shooting leaves 1 dead

    00:53
  • Manhunt underway for inmate who escaped from Ohio prison in dumpster

    02:29
  • 12-year-old graduates college in California with five degrees

    01:59
  • South Carolina school bus collides with tanker, sending 18 to hospital

    01:57
  • Murder victim in 1986 California cold case identified through DNA match

    02:59
  • Florida deputy charged after man set on fire with stun gun

    01:43
  • Custodian teaching students how to sweep their chess competition

    01:39
  • American teen missing in Bahamas after going overboard

    01:32
  • New investigation into Navy SEAL training finds dangerous conditions

    01:45
  • Record surge of post-pandemic travelers in airports this Memorial Day weekend

    02:14
  • Texas House to vote on impeachment of AG Ken Paxton

    04:04
  • Treasury secretary sets default date to June 5

    04:08
  • Chicago woman's French bulldog stolen at gunpoint

    01:45
  • Charlotte firefighters emotionally recall deadly fire rescue

    02:52
  • Pennsylvania nurse accused of delivering fatal insulin overdoses

    01:33
  • Lack of qualified graduates postpones Texas high school commencement

    01:59
  • Video shows tanker truck collide with South Carolina school bus

    01:03
  • ‘I never lost hope’: Man who spent 33 years in prison for 1989 shooting exonerated

    01:31
  • Minneapolis community marks third anniversary of George Floyd's death

    01:12
  • Texas Attorney General Ken Paxton recommended for impeachment by House committee

    01:57

Videos show monkeys brains being tested for fear responses

01:22

Videos show the National Institute of Mental Health conducting lab experiments on monkeys, testing their brains for fear responses. In some cases, the monkeys’ brains have been intentionally damaged beforehand. Animal advocacy group White Coat Waste Project obtained the videos and shared them with NBC News.