 The decision from the Mozambique authorities came after researchers discovered dozens of new species living in the forest, and it's part of a global biodiversity commitment that almost all countries have made to protect 30% of the world's land and sea by the year 2030. Our environment correspondent, Jonah Fisher, has just come back from the latest expedition there. Welcome to Eden. Welcome to the centre of Marburg Forest. This is about as good as it gets.