Mankind decoded. Season 1, Episode 8, Fire, coal, and oil / [narrated by Eric Meyers].
Episode 8 - Fire, Coal, and Oil Early man rubbed two sticks together and created fire. We learn to cook our food, saving vital energy. With less energy spent on our stomachs our brains expand, making us the most intelligent species on the planet. Armed with fire, we experiment by heating minerals to...
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