in this week's global ideas, our colleague, conny bormann, paid a visit to the volcanoeses natiol parkeforestation is posing a huge threat to local wildlife. reporter: they can only be found in the virunga mountains, and even here, only in a few forests -- golden monkeys. every day, rangers s show visits around volcanoes national park, where they can observe the monkeys in the wild and photograph them. golden monkeys are endangered. their habitat is shrinking rapidly, so conservationists are especially keen to preserve this forest. placide: involving local people, first of all, is one of the key elements we need to make sure that they are happy with the park. first of all, it helps for avoiding poaching problems. we have had many people used to go there for cutting trees like bamboo. these bamboo trees can be used for handicrafts. reporter: fast-growing eucalyptus trees have crowded out indigenous vegetation all over the park. the rwandan environment management authority, rema, says 80% of all households in the country use wood for cooking fuel. claudine nyirambabazi gets off to an ear