Paul Davies, Richard Dawkins, Lawrence Krauss and Seth Shostak

I believe that I have seen all that is on You Tube of Paul Davies, Richard Dawkins, Lawrence Krauss and Seth Shostak, from television / radio or some sort of recorded event?
Please can someone give me the ‘heads up’ on anything that any of these four have done recently or are about to do, such that I can see it live on the internet or subsequently see / hear the recorded version of it on the internet? It is especially easy to miss whatever they have done on any tiny local stations, which may be available to hear again long after it went out live. Could someone supply any appropriate links?

You know what a search engine is, right?