Could the answer to our energy demand conundrums lie beneath our feet? And no, I’m not talking about oil, coal, or natural gas. I’m referring to the fundamental stuff of energy itself: heat. Geothermal power is having something of a moment as a non-carbon-emitting source of electricity that everyone seems to like — including climate activists, the oil and gas industry, technology companies, and even the Trump White House and Republican-controlled Congress. Geothermal energy has been in ...