Nature’s Notebook: Investigating the Science of Seasons

Nature’s Notebook is a citizen science project focused on the signs of the seasons. Participants can track the changes in plants and animals in their own backyards. How do you know when spring arrives? Is it when the first flower buds appear on your favorite tree, when the daylight hours lengthen, or when the first day that you don’t need your winter jacket arrives? Though it’s difficult to put a finger on just when spring begins, being able to pinpoint when spring activities occur is

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