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    Watch the ‘Quarantined Quartet’ musical family return to perform on Stay Tuned Now

    10:53
  • More snow expected after blizzard hits California's Sierra Nevada mountains

    01:43
  • Blizzard conditions continue to impact the Sierra Nevada range

    02:45
  • Ruling in DA Fani Willis case expected within two weeks

    05:51
  • Sen. Menendez co-defendant pleads guilty in corruption case

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    02:41
  • Why Connecticut may ban legacy admissions for colleges

    04:44
  • Trump attorneys propose new trial dates in classified documents case

    03:17
  • Concerns grow that high winds could cause Texas wildfires to spread

    01:53
  • Michelle Troconis found guilty in connection to death of Jennifer Dulos

    02:39
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  • Stingray’s virgin pregnancy has scientists speculating

    04:52
  • House Oversight Committee releases Hunter Biden's testimony transcript

    03:00
  • Thousands attend Alexei Navalny funeral as Russian police monitor closely

    04:12
  • Where is Kate? Princess of Wales' public absence sparks concern online

    04:02
  • Black voters in North Carolina skeptical of both Biden and Trump

    03:52
  • A.I. used to decipher ancient scrolls from 2,000 years ago

    03:12
  • Meet the brothers behind Philadelphia's first black-owned brewery

    03:29
  • Doctor born on leap day 1972 delivers next generation of leap babies

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U.S. suspicion continues that Russia was testing a nuclear weapon

02:59

Radioactive sensors are transmitting again at a Russian monitoring station after four of them mysteriously went quiet after a deadly blast earlier this month. This raised concern with authorities that Russia was testing a nuclear weapon. NBC News’ Bill Neely reports as suspicions in the U.S. continue to grow.