Thanks for the suggestion, AEvans, but I feel that this is the right category for this thread. The focus of the linked article is on environmental safety. It talks about green body disposal methods, the production of greenhouse gases during cremation, the safe disposal of mercury fillings and metal implants, which can damage the environment, and the recycling of the human body.
Body liquefaction would not be high on my list, no.
On the other hand, there are some very appealing green burial options available now. Some cemeteries are now offering "conservation burial" which sets aside a small portion of a nature reserve to use for natural burials (unembalmed.)
Another cool one I've heard about is reef balls. Reef balls are concrete structures that are placed in damaged coral reefs to provide a site for coral polyps to take root and start growing. Regular ones are done by a nonprofit, but they have a for-profit branch that will mix your cremated ashes with the concrete. If you love the ocean, it seems like a really beautiful way to go. National Geographic did a video on them awhile back:
I plan on asking my loved ones for a Jewish burial, which is by definition a green one. Simple pine (or even cardboard) box, not even nails are allowed since they do not decay. No embalming unless it's required by law.