From the WSJ, a big package on how life will be in 35 years: 2050: Demographic Destiny. In the developed world, the future will be smaller.
Next year, the world's advanced economies will reach a critical milestone. For the first time since 1950, their combined working-age population will decline, according to United Nations projections, and by 2050 it will shrink 5%.
As Dave Pell writes in Nextdraft:
In other words, it turns out that the big problem in the world isn't that there are too many people, but rather that there are too few (Thanksgiving dinners excepted).