
The Future of Crucial Materials: A Discussion with Ed Conway
New Books in Science, Technology, and Society
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The Historical Importance and Current Significance of Salt
This chapter explores the historical significance of salt as a form of currency, its role in Indian independence, and its importance in various chemical products. It also discusses the extraction of salt from salt caverns, the potential for salt cavern storage, and the storage of books in a salt mine. Additionally, it raises concerns about the carbon emissions associated with steel production and China's control of the copper market.
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