Composting is as old as the earth but is only now begin to emerge as an approved method of returning humans to the earth after their death. It will become legal in Washington State in May 2020 and its backers hope to expand to other states as the process proves itself.
The main attraction of composting human remains is that it is perhaps the most environmentally friendly option. As outlined in a patent-pending process developed by Recompose, a Seattle-based company, it uses no artificial chemicals, produces no harmful waste products and does not require long-term real estate. It is expected to be a bit more expensive than a simple cremation but more affordable than a traditional funeral.
For more, see Composting the latest alternative to traditional burial.