Desert ants rely on the Earth's magnetic polarity to navigate, unlike other insects. Experiments reversing polarity confused ...

With “hematite” iron ore discoveries slowing to a trickle, billionaires and others are turning to the once-maligned poor cousin of the iron ore industry “magnetite” that comes with almost biblical ...

Magnetotactic bacteria synthesize magnetic iron nanominerals ... Blakemore R. P. Structure, morphology and crystal growth of bacterial magnetite. Nature 310, 405–407 (1984).

Regarding our planet, magnetism influenced its formation and internal structure ... flows created powerful magnetic fields, ...