11:15:00 +07:00 How a Jack Dorsey-backed bitcoin miner uses a volcano in Kenya to turn on the lights in rural homes - Jack has backed Gridless a company that has deployed several containers that house portable bitcoin mining farms, to Kenya, Malawi and Zambia. They work with local renewable energy companies making them cost effective since they soak up extra energy that would otherwise go to waste. It's a nice synergy that is having a big impact on local communities, many of which didn't previously have electricity. # www.cnbc.com