Music, art, language and technology are just a few of the ways we shape our surroundings and define who we are. Although they vary over time and from culture to culture, these forms of expression reveal an inventive spirit shared by all humans.Weighing only about three pounds when fully grown, your brain stores your every memory, generates your every thought and feeling and allows you to manage your world. More than any other part of the body, the human brain—and its capacity for symbolic thought—sets us apart from all other species. 
Although the human brain reached its current size some 150,000 years ago, the first evidence of symbolic thought didn't appear until tens of thousands of years later. Our symbolic awakening occurred when modern humans began to use their brains differently (read more).
Although the human brain reached its current size some 150,000 years ago, the first evidence of symbolic thought didn't appear until tens of thousands of years later. Our symbolic awakening occurred when modern humans began to use their brains differently (read more).
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