to be a vegetarian is to be aware of your environment, and the many things you can do to help it, right? so i decided to post something that should be of interest to any of my readers. . . . composting!
composting is perhaps one of the easiest things you can do to help our environment; however, people still scratch their head whenever i talk about it. everything will decompose eventually . . .and some things quicker than others. trash that decomposes in a relative short amount of time can be put in a bin (perhaps) and turned into "compost." that means there's that much less trash stinking up our landfills, and less fuel is use hauling off all your crap! Lot of stuff can be composted, 10% to 30% of your total trash.
What can be composted?To decompose effectively, compost needs nitrogen and carbon. It gets nitrogen from one type of trash, we'll call the "greens," and carbon from another, which we'll call the "browns." Greens are usually your kitchen scraps, as long as they're not bones, meats, oils, or fats (so no nuts, basil pestos, or cheeses). Carrot peelings, apple cores, egg shells, coffee grounds, tea bags, rice*, and bread*, are just a few examples of stuff to use. Browns are typically paper products. This includes newspapers, receipts, grocery bags, unpaid bills, junk mail or any yard wastes.

More greens than browns should be used, with an ideal situation being a 50/50 ratio.
So where do you put all this stuff?
There are many different ways to compost. You can simply put all this stuff in a pile in your backyard. Cheap as it may be, it will attract critters and might turn into an eyesore. I would recommend getting some type of compost bin. These range from $50 to $150 brand new (or just look for a free one on craigslist like I did). My bin is essentially an overturned trashcan with vents and a top that can be removed for adding wastes. The nicest ones are thick tubes that are on hinges so that the entire bin can be rotated and mixed with one easy motion.

You can actually make your own bin by taking some chicken wire, rolling it into a circle, and securing it on the ground. Due to the "openness" of this module, it would be advisable to not put too much cooked kitchen scraps since it would attract animals.
And what happens when it all goes in there?
Well, it takes awhile for everything to turn into soil. Composting can take as little as a month, or as long as a year. Regular aerating it certainly helps the process. I do this by sticking in a small pitch fork and mixing everything up. Also, it needs to be moderately moist. You can simply spray it down with a hose so that whenever you squeeze hand full, a little water trickles out.
*Some people claim that grain shouldn't be composted. As long as you keep a variety of "greens," then this shouldn't be a problem.