What are rare earths, crucial elements in modern technology? 4 questions answered
- Written by Stanley Mertzman, Professor of Geosciences, Franklin & Marshall College

Most Americans use rare earth elements every day – without knowing it, or knowing anything about what they do. That could change, as these unusual materials are becoming a focal point in the escalating trade war between the U.S. and China.
Stanley Mertzman, a geologist whose specialty is X-ray...
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