We usually think of magnets as something manufactured… but the strongest naturally occurring magnets on Earth come from a mineral called magnetite — and sometimes it forms lodestones, pieces of rock that are permanently magnetized. 💡 What makes a lodestone special? It’s not enough for magnetite to exist. It needs ultra-intense electromagnetic events — typically lightning strikes — to align its internal crystal domains. That jolt of energy “locks in” a magnetic orientation, turning ordinary mineral into a naturally permanent magnet. Why they matter in STEM history + science: • 🧭 First human compass needles (China, ~206 BCE–100 CE) used lodestone floating in water or mounted on bronze plates. • 🧲 Magnetite shows ferrimagnetism, a magnetic state caused by electron spins in different sublattices partially cancelling — leaving a strong net field. • 🌍 Lodestones helped scientists discover Earth’s magnetic field, because their polarity aligns consistently with geomagnetism. • 🕳️ In...