There’s a whole menu of different energy sources to choose from in generating electric power—coal, gas, wind, and so on—and some are worse for the planet than others. But regardless of where we gather it, the energy itself almost always comes from the sun. Don’t believe me? Let’s think about it:
When you burn coal, it reacts with oxygen and releases energy. But where did that energy come from? Prehistoric vegetation. Ancient ferns and weird swamp trees captured energy from sunlight using photosynthesis. Over eons, all that greenstuff got buried, where heat and pressure turned it into coal. That’s right, coal-based power is solar power. You
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