TheMayancalendarpredictsthattheworldwillendin2012,andmanybelieveit'strue.ThisEmmy-nominatedDiscoveryChanneldocumentaryillustratesthevarietyofwaystheapocalypsecouldarrivein.Truebelieverswilllearnhowvolcaniceruption,widespreadplague,deadlyasteroids,neighboringstars,andnuclearandbiologicalweaponscouldeachbringabouttheextinction...