By Lisa Sorg Inside Climate News ASHEBORO, N.C.—Boxy, gunmetal gray buildings loom over a labyrinth of ducts and tubes and catwalks, beyond which 100 train cars loll on their tracks. Smokestacks wait to exhale. This is StarPet, a mammoth factory in north Asheboro that manufactures PET polymers, derived from fossil fuels and used in polyester […]