Title says it all, How would you destroy the human race, you have all resources in your use and todays technology (no 10 ioncannons taped together fired from the moon of course).
11 ion cannons taped to the moon.
DEATH BY NUKE TO THE loving FACE.
Why do you need to know?...
By genetically engineering a totally unstoppable virus, of course. I'd start with that bastard President Madagascar, too.