Elegant solution. The dangers involved in decommissioning a nuclear reactor and an Egyptian water wheel that that is still turning after 300 years - how sustainability should and shouldn't be done!
Discovery Sci Trek, 6.30pm 28 July How did they build that?
Arches. Arches were central to to Roman construction and were used in building aqueducts, sports arenas and public baths. In Medieval Europe they were employed on large structures like gothic cathedrals. Oh, and what's the connection between Chesney Allen and Ming the Merciless?
Dunno? Chesney Allen sang about arches and Ming the Merciless was an arch villain. Please forgive me.
Discovery Channel, 2pm
How did they build that?
Suspension bridges. Elegant, strong and without any major supports, the suspension bridge is the Sophia Loren of bridges.
However, it was the advent of iron and steel which enabled the really big gaps to be spanned.
Discovery Channel, 2.30pm 30 July University challenge. The London School of Economics takes on Bristol University in one of the simplest quiz formats on television.
At least here you are safe from the 'When David Beckham cuts his toenails does he start with the left or the right foot?' Hello magazine type drivel. BBC2 8pm
Super structures: Eurotunnel.
How determination and technology suceeded in building the longest undersea railway tunnel in the world. A civil engineering feat to savour .
Discovery Sci Trek, 10am
The battle for Kyoto. The story of the battle between the energy lobby and the environmentalist movement over the Kyoto protocol. The Bush election campaign was generously funded by the energy lobby so perhaps it was no surprise he binned Kyoto to please his friends. Environmentalists are keen to get Bush to rethink.
Will he? Will he heck. Political and corporate business interests amount to much the same thing these days - just look at the UK.
BBC Radio 4, 8pm
1 August Cambridge folk festival highlights. Heavy hand knitted jumpers, beards, sandals - grey socks optional, oatmeal flapjacks, face painting and Mike Harding.
You got it, baby.
BBC Radio 2, 7pm
Restoring the Raj. Simon Parkes, a former resident of Calcutta, looks at the work of British conservation bodies as they battle to save the crumbling buildings of the city. The programme also looks at how older Bengalis regard such work, carried out by the former colonial power. Let's hope everybody is being terribly nice about it.
BBC Radio 4, 11am