Rachel Ray brings on an expert to her show to compare lungs of a healthy nonsmoker and those of a smoker of cigarettes. They look at the shape, color and texture to understand how smoking can affect the lungs.

Shortly after Charlie lands in a remote area, he saw two other people going over to help him carry out the cans. They brought him to see the sick girl they had in the tent and asked him to bring her to Yellow Knife where they can help treat her disease. They determined the disease to be tuberculosis and only agreed to bring her there after he received the ivory in return.

A parent grapples with her son's unrelenting fever and talks to the doctors about the possible diagnosis. After finding out that the Strep result was inaccurate, the doctors determine that the patient has Kawasaki disease and put him on the treatment.

In the beginning of the 19th century, a new era of interconnectedness had swept the globe, and the term "international" was born. Merchants and travellers navigated the globe, searching for resource-rich lands and gladly alleviating the natives of their abundances, splaying the rapidly industrializing west. China, was this new land where a new trading good would be discovered that would sweep the land would be find.

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.