Why are the people of Troublesome Creek, Kentucky blue?

When this question is posed in a science class, you can immediately see postures improve as students sit up a bit straighter, disengage from their iPods (or whatever electronic device had their attention), and gaze attentively as they await the answer. This is where the magic of case studies in science begins. Instead of providing … Continue reading Why are the people of Troublesome Creek, Kentucky blue?