Last week it was claimed that a material that would be superconducting at normal pressure has been found. This substance known as LK-99 was alleged to be superconducting at normal atmospheric pressure and "room temperatures. This would mean being able to say, make a superconducting power grid that could transport electricity without loss, or cheap superconducting magnets for maglev vehicles or particle accelerators etc.
Two formal scientific efforts to reproduce the result have been reported on in formal papers submitted to the physics arXiv. (One of if not the oldest such archive of open access science on the internet.)
So far the results are negative.
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