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Previously overlooked patterns in the cave art of southern France and Spain suggest man might have learned written communication 25,000 years earlier than we thought.
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what is considered communication? how has communication changed from pictographs to arbitrary words. When does communication also become art, as is the case with cavemen paintings or pictographs, etc.
How do we build a world that's less dependent on fossil fuels? One solution is right under your feet. Compressed Air Energy Storage (CAES) is a very boring name for a very awesome system that turns the Earth itself into a giant battery.