Last night, planet Earth rumbled in a place where it usually doesn’t rumble: Montana. But it also rumbled in the Philippines. Come to think of it, it rumbled in Vanuatu and Japan too. The Earth rumbles a lot. Folks were especially surprised by the earthquake that registered a 5.8 on the Richter scale in Montana. Why? Well, we’re America, and weird stuff that happens to us tends to make news. But more importantly, it is kind of strange for an earthquake to happen in Western Montana.