 The authorities in Mozambique say they'll designate the largest piece of rainforest in southern Africa a conservation area. The Mabu Forest in northern Mozambique is what's known as a sky island, perched on top of a mountain and surrounded by lowlands. Its unique location means that many of its inhabitants have evolved in isolation. Expeditions to the forest have found many new species of chameleons, snakes, bats and butterflies. BBC News.