. . . new research published Wednesday in the influential journal Nature suggests that we may have had a close scrape with such a period earlier in the current geological epoch known as the Holocene — and that pre-industrial human modifications of the climate through agriculture, fires and deforestation might have just barely staved it off.This theory isn't really new, it's been bandied about by some for a few years.
“Humanity narrowly escaped a glacial inception in the middle of the Holocene, which was almost suppressing the formation of civilization,” says Hans Joachim Schellnhuber, one of the paper’s three authors and founding director of the Potsdam Institute for Climate Impact Research (tjhe other authors are also affiliated with the institute).
Moreover, the study says, massive human greenhouse gas emissions since that time have likely “postponed” what might otherwise be another ice age “by at least 100,000 years.”. . .
Back in the Ice Age, the ice covered Canada, Chicago and New York.
Are we sure it's a bad thing?