Héilics Órbhuí

I second the recommendation to read web sites dealing with similar subject matter to the broadcasts. It will help you build vocabulary and learn to recognize certain words or phrases that are common to each field (this is how we learn in our native languages, after all). You will get to the point where RnaG isn’t particularly challenging anymore. The real challenge (at least for me) comes in interpreting colloquial or older (i.e. more authentic) speakers.