The heart of this post is the Prezi used in a session of the same title (as this post) at this week's Science Teachers' Association of New York State's Annual Meeting in Rochester, NY. This is one of two presentations related to the Marcellus Shale done by PRI staff at the STANYS meeting. The other will be posted separately. The two sessions had some overlapping content, but emphases differ.
This is also cross-posted on our Marcellus Shale blog: The Science Beneath the Surface.