 Elsewhere, 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. Jonah Fisher explains how it was discovered 20 years ago. It was only when Professor Julian Bayliss, an ecologist and explorer, was analysing satellite images from Google Earth, would you believe,