Kinda silly, but a fun read IMHO
Top 10 Ways to Destroy Earth
This is not a guide for those whose aim is merely to wipe out humanity. I can in no way guarantee the complete extinction of the human race via any of these methods, real or imaginary. Humanity is wily and resourceful, and many of the methods outlined inside will take many years to even become available, let alone implement, by which time mankind may well have spread to other planets; indeed, other star systems.
If total human genocide is your ultimate goal, you are reading the wrong document. There are far more efficient ways of doing this, many which are available and feasible right now. Nor is this a guide for those wanting to annihilate everything from single-celled life upwards, render Earth uninhabitable or simply conquer it. These are trivial goals in comparison.
This is a guide for those who do not want the Earth to be there anymore.