Steven Sullivan does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Between trees, on paths, and at forest edges, animal tracks tell of a lively, mostly unseen nightlife. Mud and fresh snow act like nature’s notepad–each animal leaves its own unique signature. For our ...

Between trees, on paths, and at forest edges, animal tracks tell of a lively, mostly unseen nightlife. Mud and fresh snow act like nature’s notepad–each animal leaves its own unique signature. For our ...