To become the Vice President for Salmon, you really have to know salmon. These magnificent beings that are part of one of the world’s great migrations are in trouble in the North Pacific. One of their homes is in the rivers and streams of British Columbia.

Dr Fasano was born and raised in Italy, where he studied pediatric gastroenterology. He was determined to cure diarrhea – an elusive goal, one he failed to achieve. However, that failure led him on a path to new research that revealed zonulin, which regulates intestinal permeability.

In this edition of Careers That Matter, we meet volcanologist Glyn Williams-Jones, whose enthusiasm for his job makes you want to say, "Where do I sign up?" He says volcanoes are just like people: they each have their own personality. Each one is unique, each one shifts, expands and, at times, explodes.