The Sun, the Moon, and the Air: How Much Deference Should a Court Give to Agency Classifications? By Melina S.L. Pinilla on November 6, 2013 Posted in Energy & Environment, Toxic Torts Much like its classification of the UV rays from sunshine and “moonshine” (alcoholic beverages), the International Association for Research on Cancer (IARC) has now classified outdoor air as a human carcinogen.