Mounted policemen disperse Orthodox Jews in the center of Jerusalem during a protest against Israeli army conscription on April 3rd, 2017. (Photo: Menahem Kahana/AFP/Getty Images)An activist clashes with riot police during a protest against Nicolás Maduro’s government in Caracas, Venezuela, on April 4th, 2017. (Photo: Juan Barreto/AFP/Getty Images)A polling agent cleans urns at a voting station in Banjul, The Gambia, on April 5th, 2017, a day ahead of legislative elections. (Photo: Seyllou/AFP/Getty Images)A person arranges stuffed pandas in a shop of the Ouwehands Zoo on April 6th, 2017, prior to the arrival of two pandas from China. (Photo: Piroschka Van De Wouw/AFP/Getty Images)A man looks at an iPhone at an electronics store in Buenos Aires, Argentina, on April 7th, 2017. Apple’s phones returned to stores in Argentina after six years of absence. (Photo: Eitan Abramovich/AFP/Getty Images)
Last year, a government watchdog report found that about 13 million American children went to schools where officials discovered lead in their drinking water. Now, advocacy groups have graded states' school water policies.