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In the last ice age, glaciation over New York was a mile deep and average
global surface T was only 5 degrees lower than today. Humanity existed as
hunter-gatherers, where it could. If warming proceeds to 5 degrees higher
than today should we expect anything less disastrous, or do we just turn
up our air-conditioners? There will be upheaval and dislocation such as
humanity has not known. Is that the future each of us wants to nurture our
DNA into?