Bitcoin is a virtual currency with a very physical footprint in the form of the big, power-hungry facilities that have sprouted up to mine it. The size of this footprint and its impact on the environment have become a hotly contested issue: The network’s power consumption this year will likely be a whopping 91 terawatt-hours, roughly equivalent to Pakistan’s, according ...

Charif Souki, who founded the biggest US natural gas-export firm and now chairs another called Tellurian Inc, isn’t known for mincing words. And he didn’t disappoint when tackling the issue of methane emissions at a recent event hosted by the Center for Strategic and International Studies: In the upstream, methane leaks are inexcusable. They’re avoidable. The technology is available to ...

Bloomberg Walmart has demoted the chief operating officer of its core US business and installed a finance expert in the role, shuffling its senior leadership team just before the key holiday period. Dacona Smith, one of the retailer’s highest-ranking Black executives, will shift to become executive vice president and chief operations officer of Walmart’s US stores, unit Chief Executive Officer ...