That number, if achieved reasonably soon, would also likely permit the maximum number of Homo sapiens to live a good life over the long run. Since the present population is over 5.5 billion and growing rapidly, the policy implications of our conclusions are still clear. This work was supported by grants from the W. Alton Jones, Winslow, and Heinz Foundations, and the generosity of Peter and Helen Bing. Agriculture could feed 40 billion. Population, sustainability, and Earth's carrying capacity.
Variety is the key to life.
Population growth, economic growth, and market economies. The population explosion. Healing the planet. The value of biodiversity. Food security, population, and environment.