Right about now, Spring is inching its way up into the high ridges of the Appalachian mountains, some of the oldest on the planet, dating back to the Ordovician Period. On a misty mountain day, early leaf buds waken on this mossy limbed tree. Some things never change. This scene of vernal transformation could have appeared millions of years ago. The cycles of the seasons continue, like the flow of time. Gladly, Spring is easing into the colder reaches of the Earth. And gladly, pterodactyls no longer terrorize the skies.