Questions for ‘A dirty and growing problem: Too few toilets’
![a photo of a toilet paper roll against a blue background](https://www.snexplores.org/wp-content/uploads/2020/09/1030_too_few_toilets_tp-1028x579.jpg)
Throughout the world, some two in every three people lack access to a toilet. Science is now looking to help them deal with — and maybe even find benefits in — their unflushed wastes.
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