vacation read #6. Interesting old school apocalypse. A comet rains "dust" on earth and disrupts the operation of all machinery. Death and disaster ensue. MC is a high school boy who is a bit of a Mary Sue (or Marty Stu, if you prefer,) who seems to always be the one with the innovative idea, in the right place at the right time, or rallying the troops when it appears all hope is lost. Still, an interesting early entry in "end of the world as we know it" type sci-fi.