My apologies for the delay. Because of Senate's big orientation event yesterday and the preparation that I had to do for that, I'm a couple of days behind on all my work as well as exhausted. Hopefully I can catch up on everything soon, though...
Anyway, here's my data organizing:
Population/Birth Rate
Change in total world population over time (time)
Birth rate/number of babies born annually (time)
Number of people who die annually, for comparison (time)
Regions of the world with the highest birth rates (location, category)
Adoption Statistics
Birth rate/number of babies born annually (time)
Number of children adopted annually (time)
Number of children put up for adoption annually (time)
Estimated number of children abandoned/orphaned annually (time)
Regions of the world with highest number of children abandoned/orphaned (location, category)
Environmental Changes
Increase in air pollution (time)
Number of trees cut down to create more living space (time)
Increase in average global temperature (time)
Regions of the world with the highest increases in these factors (location, category)
And here's what I'm thinking in terms of visual map:

Basically, I'm thinking that my representation should include two modes, one to organize data by time (like a graph) and one by world regions (like a map), so you get both an overall idea of the increase of the statistics, and a sense of which parts of the world they are affecting the most.