A new paper appears to show that the Bitcoin network while requiring a lot of power, is more energy-efficient than the existing electronic payment system used to send money between banks.
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Apple's new smarthome device is supposed to be a step up from competitors such as Amazon Echo and Google Home. So while the power draw is higher, it is expected to need less than as a 10W LED.
Microsoft has promised to improve its energy use, be more transparent and rely on more renewable energy for its datacenters. The company says it will use 50% green energy by 2018.
