What a Blooming mistake: Irish coin misquotes line from Ulysses

Central Bank of Ireland gaffe causes 10,000 €10 coins honouring Irish modernist writer to be minted with an extra word

Penguin and Random House merger approved by EU regulator

European commission says new giant will 'continue to face several strong competitors', including HarperCollins and Amazon. By Mark Sweney

Fifty Shades of Grey publisher Random House posts record profits

Operating profits leapt 75% at Bertelsmann-owned publisher in 2012 as Fifty Shades trilogy sold more than 70m copies. By Mark Sweney

Sugar, not fat, exposed as deadly villain in obesity epidemic

It's addictive and toxic, like a drug, and we need to wean ourselves off it, says US doctor

Cancel the Apocalypse: The New Path to Prosperity by Andrew Simms – review

A radical solution to the west's damaging obsession with economic growth has depressing implications, writes Iain Morris

Ann Summers credits Fifty Shades trilogy for run on nipple clamps

Profits at sex toy retailer have surged in last two years and company now plans to open up to nine new shops this year

UK inflation basket: ebooks in, champagne out

Office for National Statistics notes recent increases in the number of people reading books digitally as it adds ebooks to the new basket of goods

To Sell Is Human by Daniel H Pink – review

Daniel Pink's ideas on selling, the internet and human nature are well presented but obvious, writes Ben East

What’s the difference between an angel and a fairy?

Readers answer other readers' questions on subjects ranging from trivial flights of fancy to profound scientific concepts

Sheryl Sandberg: the Facebook boss on a self-help mission

Profile: She's helped transform two of the world's biggest companies. Now, with a book and accompanying movement, she aims to change other women's lives. But can she win over her high-profile critics?

Salt, Sugar, Fat: How the Food Giants Hooked Us by Michael Moss – review

A damning investigation into the junk food industry is both chilling and contentious, writes Joanna Blythman

Why It’s Still Kicking off Everywhere by Paul Mason – review

Newsnight economics editor Paul Mason is convinced major social change is on its way. John Kampfner is less sure

‘Saving the World’? Gordon Brown Reconsidered by William Keegan – review

William Keegan makes a convincing case for reassessing Gordon Brown's role in averting a global financial meltdown, writes Chris Mullin

The spiritualists, the offshore company and the case of the extra millions

Charity headquarters in Belgrave Square, London, were sold for £6m then immediately resold for £15m profit

Catlin Guide aims to catalogue Britain’s most intriguing new artists

Annual picks out 40 of the most promising graduates from art schools across the UK – and a quarter of them are painters