Everybody notices the flowers of spring, longer days of summer, and colors of autumn. Very few notice the hundreds of changes that hide behind these annual events.The sun, moon, stars, plants, fungi, animals, water, and weather all reflect seasonal changes back to us. Spring is the time of meteor showers, unique cloud shapes, and secret woodland sounds. Summer is a time of sky shadows, strange silences, and one-off colors. Autumn is laced with curious animal behavior and warm-water phenomena.The Hidden Seasons,New York Times