Where did it all start?

What is really clean? What is dirty? When is your clothes dirty enough to be thrown in the washing machine? Why  does it smell? What is sweat? How can we remove smell with biotechnology? How do we work with perfumes? 25 years ago most people would define clean as a bacteria free environment - that kind of clean is killing ourselves and the planet. This is the entry level to our microbiological world and our hope it that you too will start to love and use the bacterias around you.