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Willis Haviland Carrier with one of the first air conditioning units. Photo: Profimedia
Heat, like cold, has been both an enemy and a helper to mankind throughout human history. Of course, warm climates are a great help to life, and it is no coincidence that the first great civilizations emerged mainly in Europe or in warmer parts of the world.
People didn’t need to think too much about keeping warm and protecting their body shells, and the first crops grew better in warm climates, which helped the further development of the population. On the other hand, too much heat is not good for the human body – it is more likely to overheat and lose precious fluids.
Various diseases also spread in the heat, and the preservation of fresh and perishable food is problematic. Nevertheless, even in extreme conditions of cold, dryness and scorching heat, humans have been able to survive for many years. Since prehistoric times, they have invented and found different ways to escape the hot sun or protect their property and livelihood from the sun’s harmful effects…
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