What a terrible thing to do to the environment! I always thought that, aside from donating your body to science, cremation was the most cost-effective and ecologically friendly way to go (avoiding wood and metal coffins, large tracts of land, etc.). Well apparently there's a more environmentally friendly way to depart this mortal coil.
In short, a company called Promessa will freeze your body with liquid nitrogen (using no nasty embalming fluids) to the point that your frozen self becomes incredibly brittle. Then a sonicator is used to essentially vibrate the frozen stuff into a fine powder before evaporating the water in the dust and planting your remains back into the ground. The biggest environmental benefits appear to be no embalming fluid contamination, no inorganic burying material, and less space taken up. Here's a depiction from Promessa's website of the freezing process: