IE 11 is not supported. For an optimal experience visit our site on another browser.
  • UP NEXT

    Cast of TNT’s ‘Inside the NBA’ opens up about Kobe Bryant’s death

    05:24
  • Cupid’s helpers send 100,000 valentines from Colorado

    01:14
  • Sanders on Bloomberg ads: I’ve got a problem with ‘literally buying elections’

    00:37
  • Pete Buttigieg: Trump can’t ‘figure out what to do with me’

    04:41
  • Helicopter crash victim’s husband says wife ‘was an amazing woman’

    03:03
  • Kobe Bryant’s former helicopter pilot says basketball star ‘never’ pressured him to fly

    02:43
  • Bloomberg’s plan to address racial economic inequality

    06:21
  • Lev Parnas: President Trump tried to fire Amb. Yovanovitch multiple times

    04:35
  • Inside the illegal marijuana industry growing on Instagram

    05:23
  • Klobuchar: Impeachment won’t be a fair trial without witnesses

    02:30
  • Plane dumps fuel on playground during emergency return to LAX

    01:19
  • Joe Biden: Trump bringing us close to war in Middle East

    04:09
  • Oprah embarks on tour examining what matters in America

    04:55
  • Looking back at the biggest stories of 2019

    05:52
  • Drinking water near military bases feared to be contaminated

    03:22
  • Michelle Obama promotes girls’ education in Vietnam

    03:23
  • AG Barr disagrees with findings in DOJ’s IG report

    02:29
  • Boeing whistleblower speaks out: Factory was ‘dangerous, chaotic’

    04:07
  • Michelle Obama: Impeachment hearings: ‘Surreal’

    00:52
  • Year-long probe explores child labor used to mine valuable mineral in Africa

    09:01

Instagram to test feature that hides likes on posts

03:36

Instagram is testing a new feature in the U.S. that hides the number of likes on posts, receiving backlash from influencers and celebrities. NBC’s Left Field talks to two neuroscientists on the science behind the emotions that fuels so much of our online social environment.