See: "The UK Just Went 55 Hours Without Using Coal for the First Time"
https://www.renewableenergyworld.com/articles/2018/04/the-uk-just-went-55-hours-without-using-coal-for-the-first-time.html >From 2017: "UK Just Went Without Coal Power for the First Time Since 1880s" https://www.renewableenergyworld.com/articles/2017/04/uk-just-went-without-coal-power-for-the-first-time-since-1880s.html The U.S. and China are the biggest users of coal. They are far from this turning point. However, both are rapidly reducing the use of coal. This feels like a turning point in the history of technology. It is the beginning of the end. It is the sort of event people often fail to notice, yet it feels significant in retrospect. Like the last flight of a 747, the last U.S. steam locomotive manufactured (in 1945), or the last telephone circuit in the U.S. converted to VoIP. (I don't recall when that happened. It was some years ago.) We hear about the first telegram, the first telephone call, the first use of the Internet, but we do not hear as often when these things fade away. Technology often lasts longer than people realize. The last LORAN navigation station was turned off in 2010: http://www.cnn.com/2010/TECH/02/08/loran.navigation.shutdown/index.html I wonder when the last vacuum tube computer was unplugged? There might still be one running somewhere! See: https://www.pcworld.com/article/249951/computers/if-it-aint-broke-dont-fix-it-ancient-computers-in-use-today.html - Jed
