Postgresql is loading too slow

In my Rails app, I am using a d3 map where you click on a neighborhood and using backbone.js a list of ghost stories related to the neighborhood shows up. However, it is taking forever for the stories to load from the database, resulting in a floating blank div for an embarrassingly long time. How do I make the stories load faster from the database?

Thanks!

(If it helps, here is my site: www.entitycity.com)