These hot rocks can glow brighter than the sun. They could also help spell the end of fossil fuels
CNN By Bill Weir, CNN Chief Climate Correspondent Fresno, California (CNN) — At some point in the dawn of humanity, a smarter-than-average homo sapien moved a rock away from the fire for warmth and invented the thermal battery. Over a million years later, as humanity struggles to evolve past fossil fuels in time to avoid
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