Are there any eco-friendly alternatives to cremation?

Water cremation, also know as Aquamation or alkaline hydrolysis,  is an eco-friendly alternative to cremation.  It involves a gentle process where the body of the deceased is reduced to ashes using water.  Aquamation preserves over 90% of energy as opposed to flame-based cremation.  Most people find this new technique to be more comforting as water is often associated with grown and new life.  Many pet owners are choosing this method for their beloved companions as another benefit of Aquamation is that owners are able to retain more of their pets ashes due to the omission of flames as way to reduce bone into ash.