TOPSHOT - Primary school children wear masks while walking home from school in Karo district, North Sumatra province, on May 24, 2016, after the eruption of Mount Sinabung. A farmer takes care of plants covered in volcanic ash in Karo district, in North Sumatra province, on May 24, 2016, after the eruption of Mount Sinabung. / AFP / GATHA GINTING (Photo credit should read GATHA GINTING/AFP/Getty Images)
