Astonishing falls in the fertility rate are bringing with them big benefits:
http://www.economist.com/printedition/displayStory.cfm?Story_ID=14744915
Another article - 'Go forth and multiply a lot less' - Lower fertility is changing the world for the better:
http://www.economist.com/displaystory.cfm?story_id=14743589
Another article - 'The rich are different' - Rich nations are also reaching replacement fertility—by boosting their rates:
http://www.economist.com/displaystory.cfm?story_id=14743581