There were no fire lookout towers in the Arizona of the early 1900s. Instead, early firefighters found tall ponderosa pines near mountain tops or other strategic viewpoints. They fitted the trees with handmade steel spikes—known as lags—that they used as footholds to climb the trees.
Wild tobacco is markedly different from its cultivated cousin. The plant’s chemical properties have been known to Native Americans for a long time. Now, researchers are studying the wild form because of its potency and hardiness in the natural world.
One-quarter of all mammal species are bats—and they’re a prominent feature of night skies across North America. But a devastating disease has swept westward across the country since 2006, causing bat numbers to decline drastically.