Say What You Will, RFT Always Makes Great Toilet Reading
That's not to say it's cheap. The model pictured here, by Envirolet, starts at $1,600. But it certainly is green. The toilet requires no plumbing -- just a small amount of electricity. Liquid and solid waste are separated into two different containers and an exhaust fan keeps everything smelling dandy. After a few months, the contents of the toilet can be emptied into the garden.
The one thing I don't understand, though, is the need for the "composting" feature. I mean, don't the large and small intestines do that prior to the waste ever hitting the can?