Amundsen-Scott South Pole Station experiences months of darkness. The sun dips below the horizon on March 21, after which follows several weeks of twilight before complete darkness results. Photo taken on June 25, 2009. (National Science Foundation/Jeremy Johnson)

Sting covers classic ringtones (aka "Stingtones"), and records a personal outgoing message for an audience member to the tune of "Message In A Bottle."