This Carolina Wren doesn't know the precise instant of the vernal equinox of course. But the wren senses the growing hours of daylight through a surge of hormones, which tell it it's time to sing. Both science and folklore tie Spring to the renewal of nature, as the world awakens from the…

Mt. Rainier's majestic, snow-capped crown is the pre-eminent landmark of Rainier National Park. Its glaciers and snowmelt nourish rich natural habitats, including the Nisqually Delta, far downstream. This meeting of waters is a lush expanse of marsh, tidelands, and tree-lined streams. The…