Interstate 35 lies at the heart of a vast circulatory system, one of the massive transportation arteries that enable Americans to move long distances quickly. The highway also cuts through the heart of the eastern monarch’s central flyway, which produces the vast majority of brilliant orange and black butterflies that undertake one of the world’s most grueling insect migrations. En route from as far away as southern Canada to their wintering grounds in steep, fir-clad
Can the monarch highway help save a butterfly under siege?
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