Rosamund McDougall is a policy director for the Optimum Population Trust, a think-tank established in 1991 to examine the impact of human population on its environment. She has been campaigning on population issues since the 1970s. She spent time in Borneo: ‘The jungle was teaming, throbbing with life, ranging from the most glorious birds to orang-utans. The word orang-utan is actually Malay for man of the forest. So it brings you close to the idea that humans are animals living in this environment. But sadly a lot of the area has been destroyed because of logging and the rainforest is threatened.’ If we don’t reduce our impact on the environment by population control the results will be catastrophic, she says.