What is cancer, and how does it start? Find out how genetics play a role, which types of cancer are the most prevalent, and what is being done to fight this deadly disease.

A patient discovers he has a tumor in the true vocal cord

This clip explains how air intake while exercising pumps oxygen into the muscles which combines with ATP to create muscle contractions.

Dr. Murphy tries to figure out why a pregnant lady's body is attacking her child.

Drug resistant bacteria or superbugs are bacteria that have become resistant to antibiotics. This clip discusses how superbugs form and scientists are trying to find ways to fight off these super bugs.