The northern hemisphere has always been traversed by ice ages. In reality, there were more cold years that warm years, as summarized in the following graph. We are clearly in interglacial (warm) period since -10,000 . The glacial periods (which have very different names depending on their geographic locations where their signs are observed, even if it is the same phenomenon at the scale of the entire world) and inter-glacial are governed by solar and astronomical complex cycles, and they cause violent change on Earth’s climate, as demonstrated by the Serbian astronomer Milutin Milankovitch between 1920 and 1941.
These giants climate cycles (80 000-120 000 years) and observed are quite similar in form, but have some differences, which, at the human level, are considerable. They are governed by three main parameters:
Comparison between the curve…
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