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What are the key environmental and economic challenges linked to the extraction and processing of critical minerals?

This question was previously asked in
UPSC CSE 2025 (Prelims) CSAT Official Paper (25-May-2025)

The extraction and processing of critical minerals, essential for modern technologies and green energy, present significant environmental and economic challenges. Environmentally, mining often involves extensive land disturbance, leading to habitat destruction, deforestation, and soil erosion. The processes are highly water-intensive and can contaminate local water sources with heavy metals and toxic chemicals. Processing these minerals, particularly rare earth elements, often generates large volumes of toxic waste (tailings) and radioactive byproducts. Energy-intensive smelting and refining contribute significantly to greenhouse gas emissions.

Economically, the challenges include price volatility due to supply chain disruptions and geopolitical tensions, as production is often concentrated in a few countries. High capital costs for new mines and processing facilities, coupled with long lead times, can deter investment. Ethical concerns regarding labour practices and conflict minerals also add complexity. Furthermore, the push for circular economy solutions, like recycling, is vital but faces technological and economic hurdles in achieving widespread implementation.

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