These kinds of maps and statistics are fun–even if they do not immediately reveal an application.
Two take away point that I see here are the median age of Christian believers and the locus of such believers. The first, in light of the article I posted earlier, is encouraging–that Christian believers mirror the age of the global population. The second, however is challenging. The statistics present here once again remind me that there is segregation in the world today with most Christians living in different communities/nations than most Muslims, Hindus and Buddhists. How will they hear the Gospel unless there is movement one direction or the other, or better yet, in both directions?