What's a Vitae?
Well, since you asked...
Length is the main difference between a curriculum vitae (CV) and a regular resume. A CV is a two page minimum detailed synopsis of a person's skills, experience, and education. A vitae includes a summary of a person's academic background. It also should include any teaching or research experience, applicable publications, presentations, honors, awards, and other such related information. In the US, CVs are primarily used for those applying within the academic, education, scientific, or research fields and will be asked for specifically as opposed to a one page resume.
The links to the right can be useful examples for crafting your own vitae!