![]() During the last ice age, clothing was needed to survive. Humans migrated out of Africa during periods of mild weather. These behaviors were the beginnings of human culture. Modern human behaviors, such as making art, burying the dead and wearing clothes began at least 100,000 years later. They were large-brained, walked upright, had dark skin, and were naked. People with modern bodies first existed between 350,000 and 260,000 years ago. Longer head hair also covered the shoulders. Being upright also reduced sun exposure except for the top of the head, which remained covered with hair. Being smarter and having their hands free, humans could also make better tools. Another push towards being upright was that mothers had to carry their babies, who no longer had fur to cling to. In adapting to running and carrying weapons, humans became fully upright. Because the brain produces a lot of heat, better cooling the body favored an increase in brain size. Sweat drying on bare skin cooled the body better when hunting for food, so less hairy humans survived. Modern humans evolved in Africa from hominid hunter-gatherers in flat terrain with low plants and few trees. The loss of fur was one of a group of adaptations that are part of human evolution. Nudity (or nakedness) is when a person is not wearing clothing.
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