Edmonton Journal: A system of carbon dioxide offsets pioneered in Alberta for farmers may soon be a key part of the rapidly emerging cap-and-trade business. That business aims to reduce overall emissions and will have a major impact on the coal-fired electrical power plants and oil industry in the province. With the start of new global climate talks in December in Copenhagen to replace the Kyoto Protocol by 2012, the rush is on. The United States expects to have a cap-and-trade law in …