To search serious videos for research, add an edu to your search: www.youtube.com/edu. For example, one of the juniors is doing her research paper on how spankings are not effective for disciplining children and might even be considered child abuse. If she goes to YouTube and searches "spanking," she finds some results that, really, nobody wants to find. If she searches youtube.com/edu, the simple search returns more useful results that are appropriate for her research. She still needs to evaluate the sites for credibility and remember to cite the source she decides to use as a speech, but the search for a useful video went faster than it might have.