At church this week I saw a new, very sobering map on the wall. While I have seen maps depicting the status of world evangelization before, this one was better than any of them, because it takes population densities into account.
Here's the map. You can click for a full screen version, or visit WorldMap.org to learn more about their work.
This map makes it clear that we live in a real "bubble" in the US. To me the saddest parts are the dark red dots, which are hard to see but even more needy for the Good News about how they can be freed from their sins.