Noam Chomsky: History is all too rich in records of horrendous wars, indescribable torture, massacres and every imaginable abuse of fundamental rights. But the threat of destruction of organized human life in any recognizable or tolerable form — that is entirely new. The environmental crisis under way is indeed unique in human history, and is a true existential crisis. Those alive today will decide the fate of humanity — and the fate of the other species that we are now destroying at a rate not seen for 65 million years, when a huge asteroid hit the earth, ending the age of the dinosaurs and opening the way for some small mammals to evolve to pose a similar threat to life on earth as that earlier asteroid, though differing from it in that we can make a choice.