Computer Science can help us understand things better, for example it allows us to simulate a variety of phenomena and conduct many experiments which would be impossible or too expensive to do in real life. In this workshop, we will explore how simulation techniques can be used to understand how micro-organisms survive in the natural environment---without the five senses that we use. We will be using p5.js, which is a simplified programming environment that uses JavaScript. We will only have to model some simplistic behaviour, but you will get to understand the approach behind many advanced computational tools. This can be run in schools if the school can provide devices with internet access to https://editor.p5js.org/. This can be run in the department of computer science. For events on campus we will supply lunch and refreshments. This can also be combined with a campus tour and an academic lecture on CS at University. To discuss this workshop, please email dcs-outreach@warwick.ac.uk