From Agence France-Presse (Whatever happened to Reuters?)

An Australian scientist called Wednesday for an end to the age-old tradition of cremation, saying the practice contributed to global warming. Incinerating one body can produce more than 50 kilograms of carbon dioxide.
...people could help the environment by being buried in a cardboard box under a tree. The decomposing bodies would provide the tree with nutrients and the tree would convert carbon dioxide into life-giving oxygen for decades.....what a shame to be cremated when you go up in a big bubble of carbon dioxide...Why waste all that carbon dioxide on your death?....it would not be a bad idea to bequeath one's body as food for a forest....You can actually do, after your death, an enormous amount of good for the planet....

The guy is a Reproductive Biologist which maybe explains why he doesn't seem to realise that it does not matter whether some is burnt or just decomposes naturally the same amount of CO2 is produced. But he got his name in newspapers worldwide.