Earth Almanac: Nature's Calendar for Year-Round DiscoveryEarth Almanac presents the greatest hits of North American nature Structured around phenology, which is the study of seasonal patterns in nature, the day by day descriptions offer insight into activities and connections throughout the natural world. Beginning with the Winter Solstice in December, Earth Almanac highlights a wide range of natural history, including mammals, birds, fish, reptiles, insects, intertidal and marine life, trees, plants,