Welcoming a new year in Times Square wouldn't be the same without the famous ball drop. CNN explores the history of this eye-catching ritual. | CNN

Snakes, puppets and of course, shots. Here are some of the best moments from CNN's New Year's Eve Live with Anderson Cooper and Andy Cohen. | CNN

CNN's Nada Bashir explains how major protests and tension have erupted across Iran over the country's worsening economic crisis. Read more: https://cnn.it/49bID7X | CNN

The party starts December 31 at 8p ET on CNN and the CNN app. | CNN

CNN Correspondents Hanako Montgomery, Will Ripley, Kristie Lu and Bijan Hosseini play sushi roulette, where one roll has more wasabi than the rest. The team kicks off New Year’s Eve celebrations across Asia. | CNN