Sri Lankan medical staff travel by boat through floodwaters in the Kolonnawa suburb of Colombo on May 21, 2016. Foreign aid began arriving in Sri Lanka on May 21, bringing help to half a million people forced out of their homes by heavy rains and landslides that have killed at least 71 in a week of extreme weather wreaking havoc in South Asia. / AFP PHOTO / LAKRUWAN WANNIARACHCHILAKRUWAN WANNIARACHCHI/AFP/Getty Images