There have always been natural disasters, some larger than others, some that we haven't quite figured out, and some that happened so long ago that most of us are not even familiar with them. But then civilization came along, and humans have added quite a few more disasters with our constant resource extraction, manufacturing, and shipping. And the disasters just got more bizarre.
In this list of weird disasters, you'll find some that longtime Neatoramanauts know, one, two, three, four, and five. And there are more you've probably never heard of that you can read about, and find links for more information, in a list of pictofacts at Cracked.