Viewpoint: Sustainability: Malthus revisited?

The sustainability debate concerns whether the world will experience stable or improving living standards for the foreseeable future, or whether the current trajectory will overtax the natural environment, leading to a `crash' in living standards. This paper selectively reviews relevant research, focusing on both ecological concerns and technological progress, and asks whether susta inability would be problematic without rapid population growth. I suggest that continued demographic transition to lower fertility is the primary requirement for achieving sustainable development. This is, effectively, a modern translation of Malthus (1798) evolution.