Down East magazine wrote about research by Eleanor Groden, a recently retired professor of entomology at the University of Maine, in an article about browntail moth caterpillars. Maine’s browntail outbreak covered 64,000 acres of forest in 2016 and increased to twice that by 2018, according to the article. Biologists do not know what caused it, read more Down East magazine spotlights research by Groden, Mech on browntail moth caterpillars