Shenhai Kuphulika-Umboni
U.S. Environmental Protection Agency (EPA) pakali pano akuchita kafukufuku wokhudza kugwirizana pakati pa butadiene ndi khansa.
Kuphatikiza apo, EPA yapanga dongosolo lokonzekera kufalikira kwa benzene, amadziwika ngati carcinogen. Bungweli likunena kuti pali zambiri zomwe zikuwonetsa izi butadiene, pamodzi ndi njira yake yopangira mphira, zimaika pangozi thanzi la munthu.