An Introduction to Planetary Defense: A Study of Modern Warfare Applied to Extra-terrestrial Invasio author: Travis S. Taylor Bob Boan R.C. Anding T. Conley Powell asin: 1581124473 binding: Paperback list price: $34.95 USD amazon price: $31.45 USD

An interesting foray into the what-ifs and why-fors of preparing for an extra-planetary attack of some sort or another.

This book not only delves into the hows and whys of a "classic" alien invasion (as seen in science fiction), but non-standard approaches that should be accounted for.

For example, the book also deals with: preparing for collisions with Near Earth Objects; preparations for civil defense, in the case of natural disaster; dealing with a resource depletion scenario of our own devising by reaching out to the stars.

I recommend this book to:
* Science fiction authors