The Howard Hughes Medical Institute has released 115 free educational videos, guides, and publications that are avaliable to order or for digital download on their website . I ordered all the DVDs they had avaliable and received them in less than two weeks! Their material is all biology based, dealing mainly with genetic topics, such as, The Making of the Fittest , The Origin of Modern Humans , Evolution , and Exploring Biodiversity . But they also have titles that cover obesity , cardiovascular diseases , neuroscience , RNA , cancer, HIV/AIDS , infectious diseases , and stem cells. So if you are a science geek, an educator, or have kiddos who love science, head over to the HHMI website and order your science videos today!