Colorado looks to join the state of Washington in legalizing human composting. The Denver Post reports a bill, which has already passed one legislative chamber, would allow people to convert their remains to soil. The process involves leaving a body in a vessel with wood chips, alfalfa and straw to create a few hundred pounds of soil. It is often cited as the most environmentally friendly after-death option. Colorado would be the second state after Washington to allow the process, though neither allows human compost to be used for growing food consumed by humans.