The Science Hour

To mark UN World Toilet Day on 19 Nov, Alex Lathbridge discusses all things toilet related with Andrada Fiscutean and Tristan Ahtone, as they attempt to lift the lid on our collective taboo of discussing sanitary matters.In 2020, 3.6 billion people – nearly half the global population – lacked access to safely managed sanitation. Diseases such as cholera, typhoid, dysentery, and diarrhoea can spread amongst populations who still practice open defecation. And lack of access to a functioning toilet disproportionately affects women.But even if you do have access to a flushing toilet, do you always close the lid? Researchers have measured the invisible aerosol plumes that rise up from the pan of an uncovered toilet flush, potentially spreading other communicable diseases including respiratory infections including even SARS-CoV2.But flushing toilets are resource heavy. A normal flush can use 5l of water. Could they be re-conceived?Prof Shannon Yee of Georgia Tech swings my to give us the latest on the “Reinventing