The secret to decarbonizing buildings might be right under your feet

The secret to decarbonizing buildings might be right under your feet

Along with earthworms, rocks, and the occasional skeleton, there’s a massive battery right under your feet. Unlike a flammable lithium ion battery, though, this one is perfectly stable, free to use, and ripe for sustainable exploitation: the Earth itself.  While temperatures above-ground fluctuate throughout the year, the ground stays a stable temperature, meaning it’s humming with geothermal energy that engineers can exploit. “Every building si…