Reuters: A plan to reduce climate-changing emissions from Brazil's steel industry has failed, causing the amount of carbon pollution produced by the sector to double in less than a decade, researchers said. Brazilian steel producers switched their energy source from coal to charcoal from forests, causing carbon dioxide (CO2) emissions to rise to 182 million tonnes in 2007 from 91 million tonnes in 2000, according to a study published in the journal Nature Climate Change. "Increased global demand for steel,...