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 |  |  | CONNECT - Metals
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Go to the Listen Again page |  |  |  |  | Quentin Cooper reviews the evolution of metals |  |  | |
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In 1700 there were only 12 known metals. Today there are 86 and counting. That's because new ones are continually being developed and old ones improved.
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Quentin Cooper reviews the evolution of metals since the discovery of copper in pre-biblical times, and looks at the way science and technology are continually upgrading what many of us take for granted. |  |  |  RELATED LINKS |  |  | 大象传媒i Science The 大象传媒 is not responsible for the content of external websites
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