text: World Population to Rise to 8.9 Billion Although world families are getting smaller in many regions, the 50 poorest countries are expected to triple in size to 1.7 billion people by 2050, posing many challenges for world countries.
inputs: World Population to Rise to 8.9 Billion Although world families are getting smaller in many regions, the 50 poorest countries are expected to triple in size to 1.7 billion people by 2050, posing many challenges for world countries.