The evolution of drug-resistant germs, bacteria in particular, has pushed us to the brink of a relapse into the pre-antibiotic era. Before the widespread use of penicillin in the 1940s, easily curable infections were often deadly. However, in recent decades, many disease-causing microbes have developed resistance to penicillin and other antibiotics. The most frightening are bacteria that are now resistant to most or all of the drugs in our medical arsenal. You’ll learn about causes of antibiotic resistance (using the examples of MRSA, C. difficile and M. tuberculosis), explore the impacts of drug resistance and consider key actions you can take to combat the rise of superbugs.