SciShow

SciShow

The Mysterious Leap Second (2012x29)


Date de diffusion: Fév 29, 2012

Leap Day's got nothing on the Leap SECOND! Hank explains why a second is being added to 2012 and why some are upset about it.

  • Première: Jan 2012
  • Épisodes: 3680
  • Abonnés: 2
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