By Shy Cohen – Yahoo!news
Steel has underpinned modern life for centuries, but it comes at an expensive cost. The industry is responsible for nearly 7 percent of the world’s total carbon dioxide emissions, driven by blast furnaces fueled by coke, a form of coal, to extract oxygen from iron ore. For decades, most attempts at cleaner steel-making, though, have been dashed on the problem of doing it large-scale. Scientists may now have an answer.