been on an apocalypse kick lately, and this one is the best yet. They even have a form of apocalypse I haven't heard of before - geomagnetic. The short version is that modern power grids basically act like antennas, and when the sun tosses a lot of charged particles our way they can blow the grids. Imagine you see a little color in the sky one night, and then BAM! Your block goes dark and stays that way for months while the government scrambles to rebuild critical electrical infrastructure.
The Geomagnetic Apocalypse - And How to Stop It via Wired.