Microbes are tiny organisms, but when it comes to eating, they have powerful appetites. They even have a taste for harmful stuff. While eating harmful substances, they can help us clean the environment. We can use these hungry microbes to get rid of man-made contaminants present in the air we breathe, such as the pollutants called volatile organic compounds released into the air by certain industries. We can give microbes a boost with a magnetic field, stimulating their appetite and their growth, and thus making them even greater cleaners. Such magnetic fields have lots of helpful applications in our daily lives.