This happens often. I start Firefox, and on the home page is a list of articles linked to several different publications. So I'm generally already on a mission, but I think "I'll come back to that article later", and I go off to do what I logged in to do. And when I get back to the article a few minutes or hours later, it's gone! There is a new set of articles. The articles have all refreshed, and the one I wanted to read is gone. So can I see back to what that was? Or some other way to retrieve that article I never got to read before it went away?