There are a lot of ways, it turns out, to cope with unrelenting desert heat. Rattlesnakes, jackrabbits, and many other desert-dwelling mammals and reptiles are crepuscular, meaning they are most ...
People must be the easiest creatures in the world to track, if the dirt paths at the Arizona-Sonora Desert Museum are any indication. They are filled with "people tracks" from sneakers and hiking ...
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