Most of us have had the experience of stumbling over a new fact or bit of knowledge and then finding several more references to it in the near future. For example, you see a strange word which you're forced to look-up and then the next day the same word appears in the headline of your local paper. There's a term for this phenomenon but I've been unable to track it down. Can anyone help?
I think you might be thinking of synchronicity.
It's called the Baader-Meinhof Phenomenon. Read more on Damn Interesting.
That would be a form of confirmation bias. "Synchronicity" is a pop-psychology term.
The "official" term is "frequency illusion."
I have heard it referred to as 'Cognitive Resonance'. If you have recently heard about a new phenomenon you are more likely to notice it again. (and again, and again...)
But 'Frequency Illusion' is apparently the preferred name.