| 要約: | 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 make stronger tools allowing us to fight wars and build civilizations. But burning wood destroys our landscape, so Mankind exploits a new energy - we begin to light our cities with whale oil. A few Texans discover plentiful deposits of crude oil, making them and their country rich and driving the fledgling automobile industry. But as war breaks out Mankind develops a new, deadly power that eventually leads to a new, clean source of energy: the Atom Bomb.
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