A worldwide survey conducted among IUSSP members (970 demographers) shows what is on Demographers’ Minds. A nice paper (via)!
And the prize for 'the most important population issue' goes to 'Population Aging'! 'Urbanization' got the second place, except in Europe (Figure 2).
The general remarks of the paper are closely related to this recent article by The Economist "A new science of population". Quote:
Figure 2: What do demographers think are the most important problems in their country of residence? Percentages of demographers who think a problem is very important