Arts and Entertainment Countdown's Rachely Riley takes to the dance floor with partner Pasha Kovalev

The Countdown and Strictly star married her husband last August

The Week In Radio: Addison needs the genius of Armando

Just like the butterfly in chaos theory that flaps its wings and triggers an earthquake the other side of the world, so Terry Wogan's flit from Radio 2 caused seismic changes to shudder through the BBC schedule. Chris Evans has bounced into breakfast, noticeably improving as the week went on. He is accompanied by Moira Stuart, rehabilitated after she was shelved for being old, though why the sight of a 60-year-old woman was deemed unacceptable on television remains a mystery. I can think of plenty of male presenters who aren't exactly an oil painting – unless it's by Brueghel. Anyway, Chris Evans's move has the great advantage of bringing Simon Mayo into his old slot on Radio 2's Drivetime.

Carol Vorderman backs fights against power pylons

Television presenter Carol Vorderman has backed a campaign to stop a 400,000-volt overhead power line being put up near her countryside home.

Last Night's Television: The funny guys go red in the face

Comic Relief Does The Apprentice, BBC1<br/>Red Riding, Channel 4

A head 4 figures: How will Marcus du Sautoy make maths fun?

Marcus du Sautoy is Britain's most charismatic mathematician. He can make calculations in nine different dimensions. But that's the easy part.

Countdown, Channel 4<br>A History of Christianity, Channel 4<br>Could You Eat an Elephant? Channel 4

Jesus revisited by a 21st-century writer was a high point &ndash; unlike the return of a teatime institution

The broadcaster: Rachel Riley

Fresh out of Oriel College, Oxford, with a masters in mathematics, 22-year-old Rachel Riley is the new Carol Vorderman, taking on the role of human calculator in the revamped Channel 4 afternoon quiz Countdown. Riley was planning on a career in marketing but beat 1,000 rival applicants to the Countdown job where she will work alongside the dry-witted Sky Sports presenter Jeff Stelling.

2.1m watch Vorderman and O'Connor's final Countdown

More than two million viewers tuned in to see Carol Vorderman and Des O'Connor bow out of Countdown.

Two consonants and a vowel for Carol: Bye

'Countdown' co-host bows out with a few tears after a 26-year reign on Channel 4's puzzle programme

Vorderman's Countdown comes to an end

After 26 years, more than 4,500 shows and countless vowels and consonants, Carol Vorderman is finally hanging up her chunky black marker and leaving Countdown today.

Armstrong turns down 'Countdown' job

In a sudden change of heart after receiving his contract, Alexander Armstrong has told Channel 4 executives that he does not want to host the flagship conundrum show Countdown.

'Countdown' conundrum solved

The comedian Alexander Armstrong is set to give a 'leftfield' edge to the long-running Channel 4 quiz show

Maths wizard, 11, could be the next Vorderman

If countdown executives are struggling to find Carol Vorderman's replacement, they might want to consider their current contestant Kai Laddiman.

Countdown: The goodbye Carol Vorderman quiz

The presenter has resigned, and Channel 4 is looking for areplacement. Katy Guest puts prospective candidates to the test

Rebecca Tyrrell: 'It's a JFK/Diana moment in our home. Yes, Carol Vorderman has departed from Countdown'

I don't think I will ever forget Matthew's animal yelp of distress as he read a two-day old English newspaper in a Greek taverna on the tiny, peaceful island of Poros. "Sweet Lord Jesus, no," he wailed. "What have they done? God damn them all to hell, what have they done?"

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Day In a Page

Burgundy, the River Rhone & Provence – MS Swiss Corona - seven nights from £999pp
Lake Maggiore, Orta and the Matterhorn – seven nights from £899pp
Sicily – seven nights from £939pp
Pompeii, Capri and the Bay of Naples - seven nights from £799pp
Istanbul Ephesus & Troy – six nights from £859pp
Mary Rose – two nights from £319pp
'I’ll tell you what I would not serve - lamb and potatoes': US ambassador hits out at stodgy British food served at diplomatic dinners

'I’ll tell you what I would not serve - lamb and potatoes'

US ambassador hits out at stodgy British food
Radio Times female powerlist: A 'revolution' in TV gender roles

A 'revolution' in TV gender roles

Inside the Radio Times female powerlist
Endgame: James Frey's literary treasure hunt

James Frey's literary treasure hunt

Riddling trilogy could net you $3m
Fitbit: Because the tingle feels so good

Fitbit: Because the tingle feels so good

What David Sedaris learnt about the world from his fitness tracker
Saudis risk new Muslim division with proposal to move Mohamed’s tomb

Saudis risk new Muslim division with proposal to move Mohamed’s tomb

Second-holiest site in Islam attracts millions of pilgrims each year
Alexander Fury: The designer names to look for at fashion week this season

The big names to look for this fashion week

This week, designers begin to show their spring 2015 collections in New York
Will Self: 'I like Orwell's writing as much as the next talented mediocrity'

'I like Orwell's writing as much as the next talented mediocrity'

Will Self takes aim at Orwell's rules for writing plain English
Meet Afghanistan's middle-class paint-ballers

Meet Afghanistan's middle-class paint-ballers

Toy guns proving a popular diversion in a country flooded with the real thing
Al Pacino wows Venice

Al Pacino wows Venice

Ham among the brilliance as actor premieres two films at festival
Neil Lawson Baker interview: ‘I’ve gained so much from art. It’s only right to give something back’.

Neil Lawson Baker interview

‘I’ve gained so much from art. It’s only right to give something back’.
The other Mugabe who is lining up for the Zimbabwean presidency

The other Mugabe who is lining up for the Zimbabwean presidency

Wife of President Robert Mugabe appears to have her sights set on succeeding her husband
The model of a gadget launch: Cultivate an atmosphere of mystery and excitement to sell stuff people didn't realise they needed

The model for a gadget launch

Cultivate an atmosphere of mystery and excitement to sell stuff people didn't realise they needed
Alice Roberts: She's done pretty well, for a boffin without a beard

She's done pretty well, for a boffin without a beard

Alice Roberts talks about her new book on evolution - and why her early TV work drew flak from (mostly male) colleagues
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Get well soon, Joan Rivers

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A fresh take on an old foe

Doctor Who Into the Dalek more than compensated for last week's nonsensical offering