What larks! The first run of Zoo Quest – itself the first of the wildlife programmes – started 62 years ago, in 1954. It was thought it had all been filmed in black and white, on small 16mm cameras, but in fact a condition imposed by the BBC was to shoot in colour to produce a sharper image in black and white. Discovered in the archives a few months ago were perfectly preserved canisters of colour film, six hours' worth in all. This was all a decade before colour came regularly to television.

What makes a musical performance? The final of Young Musician 2016 presented five judges with this philosophical teaser to ponder. For the previous 90 minutes three contestants with three radically contrasting styles of delivery cleared every bar in front of them, with the help of Mark Wigglesworth and the BBC Symphony Orchestra. Giving the nod to one meant the elbow for the others.

In the last century, when the BBC took arts documentaries seriously, Arena was one of the highlights of the week. Nowadays its appearance is as rare as that of a Midwich cuckoo. Money, or rather the lack of it, is the problem. In our grave new world a single promo for EastEnders can cost more than a 60-minute film.

Through the snowy wastes we crunched. The winter scenery was overwhelmingly beautiful and almost devoid of any human habitation: gorgeous mountains in the distance, the black waters of the fjords gleaming, the winter sun shining through the pale blue sky. And lo, here was Andrew Graham-Dixon, in woollen hat and furred windbreaker, to introduce us to centuries of Norwegian art.

Virtuoso Violinists was an hour of unalloyed informative pleasure that toured televised highlights of great violinists playing great music. Its painless excursion into the western classical canon reminded us why the BBC is the NHS of culture, and we delighted here in a guide who proved as accomplished a presenter as she is a performer of genius.

Murder is entertainment, which is why crime and the legal process are on television every night. But where drama and documentary focus on criminals and the police who catch them – and the barristers who cross-examine them in court – vanishingly little attention is paid to the worker bees of the legal process. That's partly because the Crown Prosecution Service is a shy organisation. The Prosecutors: Real Crime and Punishment is the first time cameras have been allowed to watch the CPS at work.

It was all a far cry from the Leeds Piano Competition. Shunted on to BBC Four after the disappearance of BBC Three to online, Eurovision: You Decide nevertheless remained true to its new channel’s original remit. In today’s no-brow, morally neutral multiverse it would be churlish to point out the thoughts that it encouraged were entirely dirty ones.

Waldemar Januszczak always has a provoking agenda to shape his now nearly countless forays into television art history. In this four-part series he's out to challenge what he sees as the unthinking acceptance of the one-dimensional traditional and monopolistic version of the Renaissance.

“Finding the Light”, the second episode of this four-part series, took us to the period when Scottish intellectuals led the world in innovative and revolutionary thinking, Edinburgh’s neo-classical architecture in the leafy streets of the New Town made for new standards of civic architecture, and Scottish education could be of the highest quality.

For his latest journey Michael Palin, actor, writer, novelist, comedian, Python, traveller, has gone beyond geography in search of the visual arts with his characteristic enthusiasm, eclectic curiosity, and sense of discovery.