It will add to the pressure of directing larger percentage of GDP or indirectly, serve as incentive for companies to make profit, to solve this problem. I am mo

It will add to the pressure of directing larger percentage of GDP or indirectly, serve as incentive for companies to make profit, to solve this problem. I am more concerned about a high birthrate in countries with religious fanaticism and lack of education than a high birthrate in general. Colonizing Mars and the Asteroid Belt will need billions of people more.