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A team of Indian scientists has developed a sunlight-driven nano-reactor that can effectively treat toxic wastewater, including pharmaceutical residues, pesticides, dyes, and heavy metals. This innovative device, patented in India and the UK, operates at normal temperature and pressure without harmful by-products, making it a low-cost and environmentally sustainable solution. The technology is particularly relevant for wastewater from hospitals and industries, offering a significant advancement in water purification under the 'Make in India' initiative.