Volcanologists are geologists, who specialize in the study of volcanoes. A large part of their job is understanding what causes volcanoes erupt, how they erupt, and how volcanos' eruptions affect the life surrounding it.
Image: Buzzle.com I want to become a volcanologist because they get to work in the outdoors, usually a tropical climate, such as Hawaii. Also they can help save thousands of lives by alerting people about nearby volcano that is going to erupt. Also it seems like a fun job, that isn't too stressful or boring, which is a preference of mine.
Image: Volcano World
In order to become a volcanologist, you have to go through a lot of school, which is a slight downside to becoming a volcanologist, but it's worth it in the long run. Most volcanologists get a bachelor's degree in geology. You need to take numerous high level math courses, including, Calculus I, II and III, and differential equations. You also need to take physics courses, geology courses, geophysics, and
some biology courses. On top of
Image: Volcano World
that, if you want to be able to head, or lead experiments, you need a Ph.D. Even though you have to study all of those course/fields, you aren't just restricted to textbooks and the classroom. You can conduct research and gather data under an experienced volcanologist, while you're earning you're degree.
Volcanologists should be needed in the future, because, unless volcanos vanish from the face of the Earth, volcanologists will be needed.
http://www.buzzle.com/articles/volcanologist-job-description.html