Chris Hardman’s revolutionary Ecological Calendar—like nature itself—marks time by the seasonal changes in life on Earth: from winter snows to spring flowers, from summer sun to autumn leaves. Four full-color panels (one for each season) track the tides, Sun, Moon, planets, and stars throughout the year, while offering timely notes on natural history, ecology, and astronomy—all illustrated with Hardman’s inspired (and inspiring!) artwork. Now in its twelfth edition, the Ecological Calendar will transform your concept of time while providing a daily reminder of our responsibility to safeguard our amazing corner of the cosmos. For use in the Northern Hemisphere.