From Our Own Correspondent

Kate Adie introduces dispatches from Brazil, Taiwan, Zambia, Sweden and the USA.On Sunday Brazilians vote in the final stage of their presidential election, and the slate offers a very clear choice. Meanwhile, the indigenous peoples of Brazil are facing a host of outside threats, as illegal gold miners flood into their traditional lands to seek their fortunes. While the mining process itself damages the forest, the social effects are also insidious. Katy Watson has been to the world's largest indigenous reserve, territory of the Yanomami people, to hear how the gold rush is playing out.The issue of Taiwan's identity is one of the most vexed geopolitical questions around. On the Chinese mainland, there's no doubt - Taiwan is historically part of China and reunification should happen as soon as possible. On the island itself, most people have very different views. In Taipei, Zeinab Badawi considers the past, present and future of a possible flashpoint for regional conflict.Food prices have been rising almost ev