Unearthly Materials claimed to have big-name investors, but they weren’t all on board

Ever since they were discovered over 100 years ago, superconductors have seemed a bit magical.
You might have seen one on YouTube, levitating above a pool of liquid nitrogen, shrouded in vapor as the super-chilled seventh element boils off. Or maybe you’ve been inside a much larger one that was cooled by liquid helium, generating tremendous magnetic and radio waves that allowed doctors to peer inside your body as part of an MRI.
Even with their delicate temperature requirements, superconductors have become key players in science, medicine and technology. So you can imagine the excitement when

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