Nostradamus has a prediction about it. Christians have a whole book detailing it. And scientists are right now preparing for what they will do when we face their version of it. In fact, they’re so confident they say it’s only a matter of time before the human race may be threatened.

This week, we examine theories about the end of the world.

Show notes are on Ripleys.com. You can join the Notcast conversation on Twitter or drop us a line at [email protected].

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