Re: This is exactly the problem
"With science and technology subjects? I'm not convinced we are there yet. There are some good presenters, but the material always gets dumbed down."
I find that Radio 4 to be a last bastion of quality science programming, In Our Time in particular stands out as a show which allows experts to just talk about their subjects with only the gentle guidance of Melvyn Bragg.
Having said that, Radio 4 is not immune from the "must appeal to a wide audience and get younger listeners rot" which has infected the rest of the BBC.
Its a shame really, as a teenager I drew a lot of inspiration from the likes of Horizon, I can't even watch it these days without being distracted by the constant repetition as if they need to drill obvious facts into the minds of idiots.
Personally I blame the Discovery Channel.
Currently rewatching "Earth Story" on DVD from the late 90's. It is a superb example of factual programme making