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    House committee claims oil companies could 'doom' climate

    03:07
  • How tech workers cope with recent layoffs

    03:23
  • Federal judge declines DOJ request to hold Trump office in contempt

    03:00
  • Ukrainian MP: ‘We found zero cases of fraud or misuse’ of military aid

    05:03
  • TikTok’s relationship with China is ‘unknown’: NBC News National Security Analyst

    06:58
  • Full Panel: Sen. Sinema’s decision matters more in Arizona than in Washington, D.C.

    13:14
  • Sinema supporters feel she ‘turned her back’ on them: Ariz. Democratic Party

    05:39
  • Sinema may be an independent, but this ‘is not a 50-50 Senate’

    03:44
  • J. Alexander Kueng sentenced 3.5-year prison term in George Floyd's death

    02:01
  • James Webb telescope reveals new images of Southern Ring Nebula

    06:07
  • Indiana sues TikTok over alleged security and safety violations

    02:57
  • Arizona Senator Kyrsten Sinema announces departure from Democratic party

    03:34
  • Paul Whelan’s sister reacts to Brittney Griner’s release from Russian custody

    06:03
  • Brittney Griner returns home after months in Russian custody

    03:27
  • Virginia restaurant refuses to serve Christian group

    02:30
  • Idaho investigators looking for owner of white Hyundai in connection to student murders

    02:47
  • Service puppy in training rescued from Hudson River

    02:08
  • Celine Dion shares diagnoses of stiff-person syndrome

    02:38
  • New York Times employees launch 24-hour strike

    03:57
  • DOJ asks judge to hold Trump team in contempt over Mar-a-Lago docs

    02:44

Student opens fire in Santa Clarita high school on his birthday

03:27

The student who opened fire in the Santa Clarita high school has been identified. NBC News’ Simone Boyce is in California with more on students’ reactions and if authorities have identified a motive.