| Clean drinking water (4) |  |
| Drinking water (29) | |
| Fresh drinking water (1) | |
| Safe drinking water (3) | |
| Clean drinking water (4) | |
| Drinking water (29) | |
| Fresh drinking water (1) | |
| Safe drinking water (3) | |
to combat disease for filtering fresh drinking water, and much more. Now, researchers from MIT and the Federal University of Goias in Brazil have developed a new technique that uses ultraviolet (UV LIGHT to extract man-made pollutants from soil and water.
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