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 climate collapse, that simple idea is making a modern comeback – and hot rocks are hotter than ever, literally and figuratively.
“(The rocks) in the box right now…
