I was cupbearer to the king. For me, it is stories of missionaries. As a missionary's kid, I am always touched by the stories of missions. The group very well may not know. This is where you may need to add your knowledge.
Teaching is more than a pooling of ignorance.
We are trying to do more than make smarter sinners, but still, we are trying to make people smarter. Some people are not moved by anything, but Nehemiah was touched by a situation which was really quite removed from him. I believe that God would have us develop hearts that are touched by the pain and troubles of this world. The Bible commands that we be tenderhearted. Instead, be kind to each other, tenderhearted, forgiving one another, just as God through Christ has forgiven you.