Done? Kay. Now let's go back. Aaaall the way back to when play-doh tasted better than olives, and the dominant questions were a whole lot more profound (and less about radiator keys) than they are now.

Radiolab!

Radiolab is a podcast about curiosity, and one of the internet's greatest diamonds in the rough. Each episode takes a big topic and tackles it in a big way. The show has been winning plaudits from a lot of places, including a Peabody award and a Macarthur "genius grant" for the show's co-creator Jad Abumrad. I didn't want to use the s-word until at least paragraph three, so here goes: it's mostly about science. All the really good cool, amazing, life-disturbing bits of science.

As well as leading academics and science popularisers of the day, they will use anything to get the point across; especially a lot of spacey, mind-bending sounds that illustrate some very complex points. The New York Times has a great interactive feature on some of these sounds, but you are better to listen to it in the context of an episode.

I don't have much praise to offer that better writers haven't already said in smoother language. So: to the Radiolab archive! Find something that takes your fancy. My favourite is probably Cities.

Don't cease from exploration, and at the end of all our exploring …