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" ... If we go by the standards FoE are demanding of tin supplies then perhaps that is what is being demanded. Or if we look at the lens itself, this will be a mixture of silica (basic beach sand) and lanthanum oxide. Who knows where glass makers get their beach sand from? And we do know where the lanthanum oxide comes from, currently from Baotou in Inner Mongolia. Are we to say that Apple should be responsible for worker safety at a mine owned ultimately by the Chinese Government? Again, by that FoE and tin standard this does seem to be what is being campaigned for. ... "
" ... Samples of six rare earths, lanthanum, yttrium, cerium, neodymium, europium and samarium. ... [+] Photographer Alexander Stein/Ullstein bild via Getty Images. ... "
" ... These kinds of experiments are very much part of a tradition in physics, though, namely studying the laws of nature with the aid of materials that are not remotely natural. While it's exceedingly unlikely that these lanthanum superhydride systems will find applications as room-temperature superconductors in any practical sense, studying them may provide clues to the nature of these superconducting transitions that can be used to engineer materials that are superconductors at both high temperature and Earth-like pressures. ... "