This is misleading. They use (toxic) lead in place of rare earths. Lead has a reputation of being common and rare earths have a reputation of being uncommon, but the following chart shows that rare earths are actually as common as lead.<p><a href="https://upload.wikimedia.org/wikipedia/commons/0/09/Elemental_abundances.svg" rel="nofollow">https://upload.wikimedia.org/wikipedia/commons/0/09/Elementa...</a><p>It is cheaper to extract and process lead but that is not what is suggested by the headline