For those who enjoy learning through videos, the YouTube channel Socratica creates free video courses on a variety of subjects with particular strength in STEM topics. Here, visitors will find well over one hundred concise, well-produced educational videos teaching diverse subjects that range from chemistry to Python tutorials to English grammar. Most videos are approximately five to ten minutes in length, but there are also several playlists that offer short glossaries featuring vocabulary for topics such as chemistry, art, and opera. Students in all disciplines may be interested in Socratica's series on study tips, where they offer advice on how to study effectively and efficiently. The videos on this channel are largely targeted for high school and college students, but anyone interested in their topics will find them valuable. Socratica also has a separate channel, Socratica Kids, where they publish videos intended for younger learners. Founded in 2013, Socratica is run by Kimberly Hatch Harrison, a professional educator with Masters in Molecular Biology from Princeton University, and Michael Harrison, a former software engineer with a Masters in Mathematics from the University of Washington.