Our byways are an unnatural incursion into the natural world, especially when they’re allowed to fall into disuse. Meet a roadkill scientist and a journalist tracking how roads mess with nature—and what we can do about it
Alaska is nicknamed "The Great Land," and for good reason: it is wild, rugged and expansive. In a series of articles, Smithsonian magazine explores the history, culture and natural wonders of the 49th state.