Cremation is less obtrusive on the environment. Burial takes up space for centuries, or forever.

Cremation. Burial involves concrete liners, so it's never really 'ashes to ashes' anymore. Then there's the embalming fluid and other chemicals.

Crematoriums are strictly regulated and emit little smoke. There are actually two burners: one for the coffin and one to burn off all the smoke, gas and CO2 released from the coffin, which is then dispersed.

I've wondered that, myself.

Since we all die and have to be dealt with in some way...I'm going for cremation.
I won't be needing a casket and can have an urn that can be buried on land or in water.

I think they are both bad for the environment