Extremely Plausible, and Some Improbable, Ways the World Will End

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Our planet will cease to exist one day. It's just a matter of when. Everything meets its end, but the methods and reasons are impossible to predict. Whether it comes from the cosmos or is already on Earth waiting to take us out, there are plenty of theories about how our planet will meet its demise. And whether it's a man-made or natural disaster, we've compiled a list of plausible, improbable and highly possible ways the world could end one day.