Last Year I had to write a paper and do a presentation on soil erosion. The subject, which you probably figured out at first glance, isn't all that exciting to talk about. The thing is, the more I read on the subject the more I got scared about it.
For example, did you know that because of rain fall soil erodes along the coast taking away land mass? Or that it takes almost forever for new soil to form?
If you want to know more about soil erosion click here to read an article on soil erosion.