As for Africa and South Asia, check out this presentationL http://www.ted.com/talks/hans_rosling_shows_the_best_stats_you_ve_ever_seen.html http://www.ted.com/t

As for Africa and South Asia, check out this presentationL http://www.ted.com/talks/hans_rosling_shows_the_best_stats_you_ve_ever_seen.html http://www.ted.com/talks/hans_rosling_shows_the_best_stats_y.... They don't look nearly the same as thirty years ago!