By Josette Chun Ask any Vermonter to share favorite summer memories, and chances are you’ll hear the words “swimming hole.” Thanks to the miracles of 500 million years of geologic change, Vermont’s pools and cascades are graced with a kaleidoscope of pebbles, pools, riffles, and deep potholes. Unfortunately, every year, these same places claim the lives of Vermonters. During late June’s record-breaking heat wave, three young men lost their lives in Vermont’s lakes and rivers. Ov...