If you had a billion dollars to spend on reducing death rates and birth rates how would you spend it

1) “If You Had a Billion Dollars” The natural increase in the population of a country is determined by the difference between birth rates and death rates. If you had a billion dollars to spend on reducing death rates and birth rates how would you spend it?

2) “Carrying Capacity” Is there an adequate measure of the carrying capacity of a place, a region, a country or the planet?

3) “Just Like Everyone Else” We see may cultures disappearing today. Will there come a time when all people live the same way in all places on the Earth?