Each cremation requires about of fuel and releases about of carbon dioxide into the atmosphere. Thus, the roughly 1 million bodies that are cremated annually in the United States produce about of carbon dioxide, which is more CO2 pollution than 22,000 average American homes generate in a year. The environmental impact may be reduced by using cremators for longer periods, and relaxing the requirement for a cremation to take place on the same day that the coffin is received, which reduces the use of fossil fuel and hence carbon emissions. Cremation is therefore becoming more friendly toward the environment. Some funeral and crematorium owners offer a carbon neutral funeral service incorporating efficient-burning coffins made from lightweight recycled composite board.