The bandages are barely off after a recent nip-tuck and the internet's biggest time sink is going under the knife again with its new YouTube EDU initiative. Imagine your favorite video site with all the fun stuff stripped off -- it's essentially that. Gone are comments and related videos, and all the non brain-enhancing stuff, leaving just what's good for the grey matter. Why? Well, in the VHS era teachers had control, but now it's a minefield. With its wealth of knowledge, YouTube is an obvious choice for educators, but with so many ways to get RickRolled, or catch-up on the latest keyboard cat, pupils' attention can be lost in seconds. The project has content provided by over 600 educational outlets such as TED and the Smithsonian , with subjects broken down into more than 300 teacher-friendly playlists. We're not sure if " national constitutions "is going to be one of them, but hit the promo video after the break to find out more.