The USTC research team focused on iron hydride (FeH x), a potential product of the reaction between water brought by subducting slabs and the iron-rich outer core. Their simulations indicate that ...

Found near a known iron age fort, Derbyshire Peak District. Very crude and heavy. Purpose not clear. Has an oval stone which sits on the shallow basin. Could be as simple as a cheese press.

Of course, that heavy base can also put off home cooks who don't want to tote a massive iron slab around after a long day’s work. There's also a lot of mythologising around seasoning cast iron ...