Bitcoin
A look at Block-funded Gridless, which operates bitcoin mines in Kenya, Malawi, and Zambia, powered through solar power and wasted energy from a geothermal site (MacKenzie Sigalos/CNBC)
MacKenzie Sigalos / CNBC: A look at Block-funded Gridless, which operates bitcoin mines in Kenya, Malawi, and Zambia, powered through solar power and wasted energy from a geothermal site — WATCH NOW — Jack Dorsey backed start-up taps into geother