The BTC Library subscribes to the Films on Demand SCIENCE VIDEO COLLECTION. The link to this databas is found below, and once again there is a single search box found at the top of the database main page. Type in a keyword such as "composites" or keyword phrases such as "clean energy" to view videos on your topic of interest.
Films on Demand Science Collection offers over 7,500 streaming videos in these science subject areas: Biology, Earth Science, Engineering, Environmental Science, Geography, Mathematics, and Physical Sciences.