microorganisms

Fahroni/Shutterstock   By Tom Smith, Sheffield Hallam University Most antibiotics are natural products of bacteria and other microorganisms from the environment. They are part of a silent chemical warfare among microorganisms in soils, rivers and seas right now. The fact that they are natural products that have been around for millions of years means that even as we discover new antibiotics, there are probably already microorganisms that are resistant to […]