Malcolm Potts said he agrees with the many studies which suggest that empowering women through increased access to education and contraceptives is key to 21st century peace and stability.
Haddad said that, in other developing countries, when income goes up, malnutrition goes down by 3-4%. But even with India's booming economy, the numbers of malnourished kids have remained practically the same.
Herman Daly has advocated a transition to what's called a steady state economy, in which both human population and physical wealth are relatively stable.
"Obviously, carbon dioxide storage is not the silver bullet solution for climate change, but it's one of them, and it's a good one," says Juerg Matter .