answer: #Person1# and #Person2# talk about barnacles and their glue, which probably wouldn't be harmful to people like so many synthetic glues in use today and could have countless uses.
documents: #Person1#: Did you watch the TV special about barnacles last night?
  #Person2#: No, I missed it. What did you learn about them?
  #Person1#: That they glue themselves to rocks in the ocean, shortly after birth. They also stay in the same place forever.
  #Person2#: Right, have you ever tried removing one of those things? It would be easier to chip the rock away than to get the barnacles off.
  #Person1#: Exactly, and that's why scientists are trying to figure out what the barnacles glue is made of. It's considered one of the strongest adhesives in nature.
  #Person2#: And it would have the advantage of being able to work on wet surfaces too.
  #Person1#: Precisely, and because it's natural protein, it probably wouldn't be harmful to people like so many synthetic glues in use today.
  #Person2#: Think of all the ways doctors and dentists could use such a glue, mending broken bones, fasting false teeth.
  #Person1#: There could be countless uses. Scientists hope to learn soon exactly how the glue is made, so that people can make use of it.