When the clock strikes midnight on New Year's, people around the world sing it in unison. Here's what to know about "Auld Lang Syne," the New Year's song.
A woman ringing in the new year was treated to some fireworks alongside an amazing natural phenomenon at the same time.
Today, counting down to midnight is a time-honored feature at ... The Bulletin of the Atomic Scientists had introduced the Doomsday Clock in 1947. Countdowns permeated pop culture, too.