Heatwaves, snowstorms and other extremes of nature have a way of getting our attention. They smack us across the face and remind us of the power, majesty and unpredictability of the earth. They recall for us of the continuing cycles of nature, of the gentle spinning and revolving of the earth around its axis and around the sun, taking us into and out of our days, nights, seasons and years. If we think we’re in control, we need to stop …