Though it's one of the most important terms in conservation, a conservation easement isn't exactly a linguistic equivalent of a freebie. I'll be the first to admit that my mind landed on the term with an audible thud, but upon visiting the Nature Conservancy Web site, I learned it is really an interesting concept.

A conservation easement essential places restriction on a piece of property, protecting certain landowner rights and selling or donating a chunk of those rights. Most often the right to develop or subside that portion of land is give up, so to speak, and that particular piece of land is then protected from future development.

What is interesting about an easement is the ability to target very specific rights that are necessary to protecting from environmental damage—water quality for example. The landowner retains certain rights, and the easement is designed to work synonymously with the landowner so that any personal needs remain uninterrupted.