by Elio — We live off rare earths, which have be­come es­sen­tial to our way of life. These el­e­ments are in­te­gral com­po­nents of the gad­getry of the mod­ern world, and in a big way. Lan­thanides, as they ap­pear in the Pe­ri­odic Ta­ble, are used in the man­u­fac­ture of a large num­ber de­vices that...