David Roodman at GiveWell has an excellent series looking into geomagnetic storms, and published the last of four posts today: http://blog.givewell.org/2015/08/

David Roodman at GiveWell has an excellent series looking into geomagnetic storms, and published the last of four posts today: http://blog.givewell.org/2015/08/21/coming-down-to-earth-what-if-a-big-geomagnetic-storm-does-hit/ http://blog.givewell.org/2015/08/21/coming-down-to-earth-wha...