Yuck! Bacteria can be gross for sure. They consist of only a single cell and are consistently looking for a host to help it thrive on earth. They are survivors and can live in sub-zero temperatures and in temperatures that no human could survive. But how can these things live? Some bacteria absorb nutrients from sulfur, plants, people, animals or from the environment. Some live in your gut like E. coli and help digest food. Some bacteria have strains of E. coli that can make you ill. Certain bacteria can cause colds, sore throats and infections. Bacteria is not always a bad guy, they can be beneficial. They are found in our yogurt, yeast and other fermented foods to maintain a healthy defensive tract. They are used to create antibiotics like penicillin, griseofulvin, griseofulvin, bacitracin and neomycin. Here are 5 facts on the ever mysterious bacteria.