The emerald ash borer (EAB) is a deceptively beautiful insect. As the first part of the name implies, the one-centimeter long beetles are an iridescent, metallic green. They have large, dark eyes and some might even call them cute. The emerald ash borer (EAB) is a deceptively beautiful insect. As the first part of the name implies, the one-centimeter long beetles are an iridescent, metallic green. They have large, dark eyes and some might even call them cute. Plants & Animals Ecology Phys.org – latest science and technology news stories