Schools should not be using random drug tests to catch or deter drug abusers, the American Academy of Pediatrics advises in an updated policy statement.
Results from Nigeria's elections, potentially the closest since the end of military rule in 1999, were due to start trickling in on Monday after a weekend vote marred by confusion, arguments and occasional violence.
Brazilian Finance Minister Joaquim Levy mildly criticized President Dilma Rousseff, saying she does not always act in "the most effective way," in remarks at a time when investors are watching for signs of tension between the two philosophically different leaders.