Three days after AMC telecast the mid-season finale of AMC’s “The Walking Dead,” clocking nearly 11 million viewers, and becoming this season’s highest rated drama series among the 18-49 year olds advertisers prefer, Discovery Channel announced its new special, “Zombie Apocalypse” special had been scheduled for Dec. 18 as part of the channel’s Apocalypse Tuesday lineup — a convenient three days before 12/21/12, which, according to some marks the end of a new era — or the end of the world, depending on whether you’re a glass half empty or glass half full kind kind of doomsday subscriber.

“The Walking Dead” (AMC/AP)

In addition to Ivy League professors, the special profiles a mother of two who’s teaching her children to fight zombies, the founder of the Kansas Anti-Zombie militia who has a secret location stockpiled with all the supplies necessary to keep him alive during the apocalypse, and an ex-military firearms instructor who, Discovery says ominously, wouldn’t hesitate to kill a zombie. Well, who would? People for the Ethical Treatment of Zombies?

Discovery’s fun-filled Apocalypse Tuesday will begin at 8 p.m. with “How the World Will End.” After that laugh-riot, it’s on to “Apocalypse 2012 Revelations” at 9, and “Zombie Apocalypse” wrapping up the night, at 10.

”Zombie Apocalypse” is produced for Discovery Channel by Firecracker Films, which also gave the world “Monsters in My Head,” “My Big Fat American Gypsy Wedding,” “My Mom is Obsessed,” “Demon Exorcist,” “Head Over Heels in Rats,” “Erotomania,” “The Man Whose Arms Exploded” — and “Susan Boyle: An Unlikely Superstar.”