It has been suggested (via Neatorama) that the most environmentally-friendly thing to do with your body after you die is to liquefy it by means of an alkali salt bath, which is called resomation.  Casket burials use embalming fluids that leach into the ground, and cremations utilize fossil fuels for combustion.  Or as one commenter added:  "I remember reading [about] a method where the corpse is put in a tub full of crabs, who eat it."  Response:  "Then do all your friends & family gather a week later for a crab boil?" #nature