Erika, left, and her twin sister Macarena, who suffer from chronic respiratory illness, play in their backyard near recycled agrochemical containers filled with water that is used for flushing their toilet, feeding their chickens and washing their clothes, near the town of Avia Terai, in Chaco province, Argentina on March 31, 2013. The twins' mother, Claudia Sariski, whose home has no running water, says she doesn't let her children drink the water from the discarded pesticide containers. (AP Photo/Natacha Pisarenko) ( Argentina Agrochemicals )