NEW : Oil slick may argue against an in-flight explosion , Brazilian official says . NEW : The oil spill is not expected to cause any environmental damage in Brazil's coastal waters, a spokesman for the country's environment ministry said today. Pilots who fly over that part of the world keep track of radar and `` are very , very wary about the weather as they go back and forth down in that area . '' Air France flight disappeared over Atlantic Ocean after taking off from Brazil . Memorial for the victims of Flight AF 447 takes place in Paris at Notre Dame .
NEW : Oil slick may argue against an in-flight explosion , Brazilian official says . NEW : The oil spill is not expected to cause any environmental damage in Brazil's coastal waters, a spokesman for the country's environment ministry said today. Air France flight disappeared over Atlantic Ocean after taking off from Brazil . Memorial for the victims of Flight AF 447 takes place in Paris at Notre Dame .