Now that Australia’s richest man is saying that his country should get in the business of making “green steel” from hydrogen and renewable energy, it is ruffling some feathers in the coal-rich nation.

India and the U.S. are plugging a hole in the market for steel-making coal caused by declining Chinese demand which has in turn opened opportunities for investors to potentially double their money if ...

Researchers have shown how a by-product of steel making can be used to both treat wastewater and make stronger concrete, in a zero-waste approach to help advance the circular economy. Produced during ...