Funny you mention this, I have just started building a site to help with this exact problem. Seems like there is so much good content out there, but it is hard to find the good evergreen content once it leaves the front pages of social media sites. I am not starting with scientific subjects (I'm starting with history, sociology, and general life issues). The difficultly will be that there is a lot of content to get through, so I'm going to have to figure out a way to crowdsource the curation, somehow.