Top 11 methods to destroy earth

Life on earth as we know it has been destroyed many a times by Hollywood (read Ronald Emmerich). But is it actually possible to destroy earth, of course in the absence of a Death Star or Red Matter. Firstly the Earth is close to 4.5 billion years old and weighs around 5.9736×1024 kg's which is 5,9736 followed by 23 zeroes. Sam Hughes has put up 11 ways the Earth can be completely destroyed, of course none of the methods...

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