"Coal used to be a very dirty fuel but coal has become cleaner and cleaner over the decades. Clean coal now is quite clean. Clean coal now has the same emissions profile as natural gas. Clean coal can become cleaner still. We can take even more of the pollutants out of coal and I believe we should. Clean coal, I think, is the immediate answer to Canada's energy needs and the world's energy needs. There are hundreds of years available of coal supplies. We shouldn't be squandering that resource. We should be using it prudently."