jack Dorsey says bitcoin can make the world greener. could he be right? the day before Earth Day this year, Jack Dorsey, twitter's CEO, tweeted that #Bitcoin incentivizes renewable energy: it was a counterintuitive, provocative assertion as cryptocurrency critics and environmental advocates have decried bitcoin- and were especially noisy about it that week- for using too much electricity, so it seemed exactly backward what Dorsey was saying, that bitcoin was actually positive for the environment. To support his assertion, Dorsey had shared a new white paper from Square, his other company, which argued that “Bitcoin mining presents an opportunity to accelerate the global energy transition to renewables,” and “could encourage investment in solar systems.” Beyond the 17,500 people who liked Dorsey’s tweet, there was one particularly interesting reply: Elon Musk, the ecocentibillionaire CEO of Tesla, answered simply, “True.” At that point, Musk had been egging on crypto f...