Brazilian authorities said they have found a backpack and personal effects of a British journalist and an indigenous expert who disappeared in the Amazon last week, with the Briton’s mother-in-law saying she has lost hope that they will emerge alive. Fears have been mounting over the fate of Dom Phillips, 57, a veteran contributor to the Guardian, and 41-year-old Bruno Pereira, an expert with the Brazilian National Indian Foundation, since they disappeared on June 5 after receiving threats during a research trip to Brazil’s Javari Valley. After a slow start, the Brazilian federal police and the army have intensified the search for