Nice clear take on the mid-terms, by Ezra Klein at vox.com (via Ben Wikler)
Wonderful, wonderful visual explainer (via How a Car Engine Works - Animagraffs)
Series of short videos (from Australia) explaining key concepts in media and communication, starting with the Hypodermic Needle Theory.
Missed this, from Aleks Krotoski, first time round. If you’re having trouble understanding why the predictive web is making the world smaller, not bigger, less surprising, not more surprising, this is a good 6-minute explainer.