Mongabay: A new study by Wetlands International and Greifswald University (The Global Peatland CO2 Picture [PDF]) provides country-by-country data on peat stocks and emissions. Overall the assessment found that drainage of wetlands for agriculture, forestry and peat extraction causes 1.3 billion tons of carbon dioxide emissions per year. Emissions from fires and peat mining (for horticulture and fuel) amount to another 700,000 million tons per year.