'The Optimum Population Trust believes that Earth may not be able to support more than half its present numbers before the end of this century, and that the UK's long-term sustainable population level may be lower than 30 million. Research and policy are summarised on this website'

I had never heard of he above organisation. They gained my attention, because they gained a very prominent patron: Sir David Attenborough, famous naturalist, a man whom I adore.

Sir David Attenborough said yesterday that the growth in global population was frightening, as he became a patron of an organisation that campaigns to limit the number of people in the world. The television presenter and naturalist said that the increase in population was having devastating effects on ecology, pollution and food production.

“There are three times as many people in the world as when I started making television programmes only a mere 56 years ago,” he said, after becoming a patron of the Optimum Population Trust (OPT) think-tank. “It is frightening. We can’t go on as we have been. We are seeing the consequences in terms of ecology, atmospheric pollution and in terms of the space and food production.

“I’ve never seen a problem that wouldn’t be easier to solve with fewer people, or harder, and ultimately impossible, with more. Population is reaching its optimum and the world cannot hold an infinite number of people,” Sir David, who has two children, said.
I'll use the questions of the organisation itself as a starter for debate: 'Concerned about the speed of global warming? About food, water and energy scarcity - the effects of overpopulation on a plundered planet?'