Overview: As we build an overlapping map of natural disaster threats around the world, we make an unsettling discovery: Mother Nature has handed us our eviction notice, and almost no place is truly safe. Drought is a major threat around the world, and in San Angelo, Texas, pilots are fighting back by seeding the clouds to create weather the local ranchers desperately need. We travel to Iceland to delve into a town on the edge of a volcano where residents dodge molten lava and constantly rebuild as eruptions eat their property. The U.S. has more damaging weather and disaster threats than any other nation, and the epicenter of it all is New Madrid, Missouri, home to the biggest earthquake in American history, along with a laundry list of other potentially deadly natural disasters.