How Long Will a Power Station Run a Fridge?
A simple formula, a runtime table for common power station sizes, and practical tips to keep your fridge cold for longer during a power outage.
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Iron Nitride Magnets (Fe16N2): The Complete Guide
Iron nitride magnets are made from iron and nitrogen and contain no rare earths. Here is how Fe16N2 works, why it is so hard to tame, and how close it is to mass production.
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Which EVs Don’t Use Rare Earth Magnets?
Most electric cars rely on rare earth magnets, but not all. Here is every EV with rare-earth-free drive motors, how those motors work, and whether it matters when you buy.
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Rare Earth Magnet Alternatives: The Complete Guide
Every option for replacing or reducing rare earth magnets, from ferrite and iron nitride to recycling and magnet-free EV motors, with an honest look at what works today.
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Tetrataenite: The Meteorite Magnet Explained
Tetrataenite is a rare-earth-free iron-nickel magnet found in meteorites. Here is why it could rival neodymium magnets, why it is so hard to make, and why a famous 2022 breakthrough was retracted.
