By Tobias Carroll Climate change doesn’t just mean radical shifts in temperature all over the world. It can also result in droughts — which can, in turn, cause storied bodies of water to become smaller and smaller. Lake Mead in Nevada is one such example. As of this year, the lake is at a historically low level, at only 30 percent of its capacity. This situation has prompted alarms for the regions nearby, which depend on the lake’s water. As Lake Mead dries up, more and more of the lake bed has become exposed. That, in turn, has led to a number of things once at the bottom of the lake being re…