EnvironmentPetrobras to appeal ban on drilling well offshore from the mouth of the AmazonCompany claims to have fulfilled all ‘technical needs’ for the well to be approvedSplit: Brazilian President Luiz Inacio Lula da Silva (left) and Brazilian Minister for the Environment & Climate Change Marina Silva (right) flank an indigenous leader at an event in Brasilia in April.Photo: AFP/SCANPIXGareth ChetwyndLondon