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the proof of work pays, bitcoin, use more energy than all the processing for google, amazon, and faceokombined. more than all the data centers globally, combined. and all the energy than the solarpanels that exist globally. in fact, according to digital economist, one bitin transaction requires approximately 880 kilowatt hours. this is equal to the energy needed to power the average u.s. household for one month. given a cryptocurrency mining operation creates minimal jobs. for example a large u.s. operation of 100,000 pressors employees 40 staff per shift. as of a year ago made $2 million per day. profits for cryptocurrency mining company or limited not by labor costs but rated by the cost of electricity. as one of the solutions for cheap energy, cryptocurncy mining companies have work to reopen retired fossil fuel power plants like though lge-scale facility called greenwich interest in, new york, on seneca late. and environment with moderate temperatures, clean air, and abundant freshwater for cooling have made new york an ideal location for cryptocurncy mining companies. in the finger

morning on c-span or c-span now our free mobile app or join the discussion with your phone calls faceok commes text messages and tweets. friday c-span brings you after words from book tv program nonfiction authors are interviewed by journalists, legislatures and others on their latest books. david shan author reflects on her american experience across five generations and the impact the chinese exclusion act and on her family and community she's interviewed by yale universities of history professors mary lou. watch after words every friday at 8:00 p.m. eastern on c-span. it has been a half-century since the last american combat soldiers left vietnam in 1973 and saturday, live on american history tv on c-span2 watch a daylong conference from george washington university looking back 50 years at the end of the vietnam war beginning at 9:00 a.m. eastern hear first-hand accounts and analysis of the war from vietnam war veterans, journalists, diplomats, historians and military leaders speakers include veterans, secretary of defense chuck hagel pulitzer prize-winning journalist philip cavuto