What if your students could build a working biomedical prototype from scratch – one that explains human digestion, gas diffusion, sensor calibration, and programming all at once? That’s exactly what happened at ITTS “E. Divini” in San Severino Marche, Italy, where Professor Lorenzo Morresi and his colleagues Professors Battistini and Capri led a group of fifth-year chemistry and materials students – Noemi Aloi, Corrado Avellino, Michele Bagoi, Alessandro Fiorani, Priya Kaur, and Matteo Zagaglia – to prototype a hydrogen breath test system using an Arduino Nano board. The project was featured in Italy’s Focus Scuola magazine and is a great example of what’s possible when curiosity meets the right tools. The science behind the idea Lactose intolerance isn’t a disease – it’s a condition caused by a deficiency of lactase, the enzyme that breaks down lactose into glucose and galactose in the small intestine.…