Grist: It`s a Wednesday morning in late August, the first day of classes at the Shishmaref School. The doors of the pale blue building haven`t opened yet, and the new principal is hurriedly buttering toast in the kitchen for the students breakfasts. Teachers are scrambling to make last-minute adjustments to their classrooms, while anxious kids, ranging from pre-K students through high schoolers, wait on the porch, their jackets zipped against the chill of the early-morning air. It`s all so incredibly normal,...