Today's headlines in 60 Seconds, From the South: In Brazil, four consecutive polls now show incumbent President Dilma Rousseff pulling ahead in the presidential race; In Uruguay, the broad front, a coalition of leftist parties, is also perparing for national elections. In Canada, gunfire rang out earlier today in the capital of Ottawa; In Mexico, tension is building around the disappearance of 43 students in Guerrero state; Ninety one cuban medics are off to west Africa to fight the ebola virus.
