 Have you ever wondered what kind of living things manage to grow and survive on services even after they've been cleaned? With this swab alone I have managed to gather thousands of tiny creatures called microbes. Microbes are tiny organisms that are mostly invisible to the naked eye but they are found everywhere. In fact, there are more microbes on this planet than any other species combined. Their combined weight accounts for more than 60% of the Earth's biomass. We tend to think of microbes as bad things that cause disease and make us sick. However, most of them are harmless and in fact they're critical to our survival. Did you know that microbes generate over 50% of the oxygen that we breathe? I am fascinated by these small creatures and that is why I decided to study them. I am an avid microbiologist because I want to discover all the awesome ways that microorganisms help shape the world. My name is Bridget and I'm a National Science and Technology Week Champion. You can be one too.