Curiosity has replaced panic, thanks to naturalist Charley Eiseman, co-author of the field guide “Tracks & Sign of Insects and Other Invertebrates” (affiliate link), who’s decoded some of nature’s beautiful little mysteries for us.Charley is a freelance naturalist, and when he’s not conducting biodiversity surveys for clients, he devotes himself to learning more about the natural world through an e-book he’s created on leafminers, and a North American Leafminer Project on iNaturalist that he started that has some 50,000 sightings submitted. (Above, a mine created by larvae of a moth, Stig