There is a growing problem in the United States, and that is the increasing resistance of bacteria to antibiotics. For several decades nearly every concerned parent has brought their children to the doctor for every cough, sneeze, and minor infection. Antibiotics are among the most prescribed category of medications (this information is based on experience in a pharmacy a few years ago).
Because of this overmedication, an increasing number of bacteria are resistant to common antibiotics. New medications are having to be created, but some bacteria seem to be adapting faster than the new medications can be developed.
This infographic goes into the science behind the the resistance of bacteria, and what can be done about it. Poll your class about whether this is a problem that needs to be addressed, or if it is simply a hiccup in human existence. Also, what can be done to help this problem? What do your students already do that is suggested, and can your students come up with any other solutions?