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В этот кластер входят документы, описывающие изменения или пределы физиологических и биологических параметров человеческого тела под воздействием внешней среды или образа жизни.
Общие признаки: биологические пределы организма, изменение температуры тела, эволюция мозга, влияние среды на физиологию
Группа выше: Биоритмы, мозг и долголетие
Смысл: The main idea is that human baseline body temperature is decreasing globally, likely due to a combination of improved health (reduced inflammation) and a significant decline in daily physical activity and metabolic rates.
Human body temperature has been steadily decreasing over the last 200 years, likely due to lower levels of chronic inflammation and a more sedentary lifestyle.
Смысл: The main idea is that humidity significantly lowers the temperature at which heat becomes lethal to humans because it prevents the body from cooling via sweat evaporation. The core message is a warning that current climate trends are pushing environments toward 'wet-bulb' thresholds that exceed human biological limits.
Human survival depends more on the combination of heat and humidity (wet-bulb temperature) than on heat alone, with a critical danger threshold for healthy adults at 31°C WBT.
Смысл: The main idea is that brain size is an evolutionary response to environmental challenges; since modern civilization has replaced individual survival skills with collective knowledge and specialization, the biological pressure to maintain a large, high-capacity brain has diminished, leading to a gradual reduction in average brain size.
Human brains have shrunk over the last 25,000 years because modern society's collective knowledge and specialization reduce the evolutionary need for high individual survival intelligence.