Scientists at the University of Oregon are working on a greener way to make iron metal—a big step toward cleaning up the steel industry, which is one of the largest sources of carbon pollution worldwide. Their latest research, published in ACS Energy Letters, shows how this new method could be more efficient and environmentally friendly than the traditional way of making steel. Right now, making iron from iron ore usually happens in blast furnaces that burn fossil fuels and release a lot of carbon dioxide into the air. But chemist Paul Kempler and his team have developed a new method...