Cyanobacterial blooms in lakes can release microcystins, toxins that threaten drinking water, swimmers and ecosystems. Existing tests are either fast but imprecise, or precise but slow and costly. EPFL researchers (labs of Matteo Dal Peraro & Tamar Kohn) now report a nanopore sensor that reads these toxins one molecule at a time: 7 variants distinguished, results in Lake Lugano water matching LC-MS/MS, and detection 40x below WHO guidelines. https://actu.epfl.ch/news/a-tiny-pore-identifies-cyanobacteria-toxins-in-lak