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  Per- and polyfluoroalkyl substances (PFAS) have become ubiquitous throughout the environment yeezy boost , and increasing evidence has demonstrated their deleterious effects. A group of smaller, fluorinated compounds are becoming replacements for these 鈥渇orever chemicals,鈥?though research suggests the smaller versions could also be harmful. Now, a study in ACS鈥橢nvironmental Science & Technologyreports that the levels of these substances in many indoor and huma yeezy schuhe n samples are similar to or higher than those of legacy PFAS.Though PFAS have seen widespread use in consumer goods, including food packaging,period productsandtoilet paper, some governments are beginning to regulate their use. The most common are PFOS and PFOA 鈥?each are built with eight-carbon-long backbones and are cons converse chucks idered to be perfluoroalkyl acids (PFAAs). 鈥淪hort-chain鈥?PFAAs, containing fewer than eight carbons, and 鈥渦ltrashort-chain鈥?PFAAs, with just two to three carbon atoms, have been thought to be suitable replacements for PFO  EGYPT:Egypt launched six air strikes on milita adidas campus 80s nt camps in Libya Friday after masked gunmen attacked a bus of Coptic Christians south of the Egyptian capital, killing at least 28 people.Assailants in three pick-up trucks attacked the bus as it was heading for the Saint Samuel monastery in Minya province, more th stanley cup an 200 kilometres (120 miles) from Cairo, before fleeing, the interior ministry said.It was the latest attack on Copts after IS group militants bombed three churches in December and April, killing dozens of Christians.President Abdel Fattah al-Sisi, in a televised address, said Egyptian forces had hit a militant聽training camp in retaliation.State television reported six air strikes against "terror camps in Libya", specifying nb 574  that militant聽training camps were hit in the eastern Libyan city of Derna. Witnesses there reported four strikes by a single aircraft. "Egypt will not hesitate in striking terror camps anywhere, either inside (the country) or outside it," Sisi said.A spokesma