The world has already seen five major extinctions, and now there will be another. I...I didn't want to believe it. None of us did, but there we were in Helsinki, big and small. Climatologists, bacteriologists, demographers, physicists, immunologists, 26 Nobel Prize winners among us. We built all the models, did all the math, and all conclusion was consistent. Homo Sapiens will soon vanish from the Earth. It is now an actuarial certainty. No matter how the end will come-- environmental disaster, pandemic disease, unbreathable air, impotable water, not enough food, nuclear winter, some combination of them all. Relatively soon the Earth will indeed purge itself of human life, and God knows how many other species.