When we have systematically poured in to the human psyche bitterness, division, hatred, identity superiority, domination & competition. And further entrenched those ideas in to our exploitation of the Planet. By what arrogance did we think the human biological system & Nature itself would simply be a bystander & not react? The same arrogance perhaps that conceived, created & used the nuclear weapon. Ask Nature if it is deterred by nuclear weapons. What use such weapons & untold sums of money expended in the face of current challenges? Could that not have been put to better use to deter poverty, hunger & disease?