Planets, Sunspots and Earthquakes: Effects on the sun, the earth and its inhabitants

I highly recommend this book for the armchair as well as the student astrophysicists as well as USGS scientists. It belongsin the libraries of colleges as well as highschools. His explanations of all electromagnetics involved has eased mymind concerning any earth responses to planetary positions. I highly recommend it to anyone concerned about December 21,2012.