Why is a blog on war and the science behind war important? There are, of course several good reasons, and since I've just written a book titled "The Physics of War: From Arrows to Atoms" I think I'm in a good position to write one. One of the main reasons, of course, is that there are a large number of wars going on around the world today. Indeed, war has existed on Earth ever since the first bow and spear were invented. It almost seems that it is a natural state, but it isn't; it's one of the major things that causes tremendous grief and suffering for large numbers of people. And we should do everything we possibly can to avoid it. At times it seems as if there is little we can do, nevertheless we should always try. The book I wrote traces the history of war from the earliest times and shows that science and technology-- particularly, physics -- have played a significant role in war'. And I feel that it is important to study and understand all aspects of war if we are to somehow stop it. At home here in the US we are along ways from any of the wars in Asia and elsewhere, and they may seem to be of little interest, but we are involved and they definitely have an effect on us.