The Conversation

System to rate the scarcity of important metals aims to keep shortage at bay

Author: The Conversation

Rare earth elements, the unusual spices of the industrial world.Peggy Greb/USDA

Store cupboards usually contain the basics – canned tomatoes, soup, dry goods – but rarely the more exotic additions required in small amounts to make a dish sing. In the same way, a growing shortage of some of the rare elements needed for high-tech...

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