We don’t yet know how the long-horned tick came to the United States, how it’s spreading, or what it’s capable of doing. All we know is that it’s here. There’s a new tick crawling around the Eastern half of the United States: the long-horned tick, an invasive species from Eastern Asia that’s been spotted increasingly in urban areas like Staten Island in New York, along with New Jersey, Virginia, and all the way down to Arkansas. This new tick, however, is a mystery. Its cousins, most notably the black-legged tick, currently inhabit most of the eastern half of the United...