"Because of the nature of this type of cancer ... burial is a very likely outcome," Wang says in the film. "I'd like to use whatever time I have left to help set a pattern in our community of really going back to traditional and natural ways."
Wang commissioned his own biodegradable coffin made from re-purposed materials -- he dances on it in the film -- and actively sought a funeral that would give his body back to the land.
Sehee said that his work promoting ecologically sustainable death and burial practices can be challenging. Aside from the often wonkish discussions of standards, certifications and public policy, "people just don't like to talk about this stuff," he said.
Brian Wilson, co-director of the film, said that the process of making the film was an eye-opening experience. "It's fascinating because burial traditions in other countries vary so much," he said. "Here we're stuck in this conventional thing of lots of embalming and big metal caskets.
"What we're hoping to show people is that you don't have to do it this way. These methods are really only 150 years old, as opposed to natural burial, which is millions of years old."