Beneath the ancient red soils of Western Australia, a quiet chemical conversation between iron and water may have been unfolding for millennia — and researchers at Edith Cowan University have only now learned to listen. Their discovery that magnetite, the iron oxide mineral woven through the state's vast ore deposits, naturally generates hydrogen gas when met with superheated water deep underground, suggests that the clean fuel humanity has labored to manufacture may already exist in the Earth's own keeping. It is a reminder that the planet's geology, shaped over billions of years, sometimes a