Bitcoin is an experimental digital currency that has gained popularity worldwide

itBit, a NASDAQ-powered Bitcoin currency exchange, raises $3.25m in funding

Singapore-based exchange is one of many trying to create a secure market for trading the digital currency

Rotterdam rising: The city is due to unveil a new landmark

Travel by numbers: Rotterdam - Vertical city hits new heights in industrial-chic design

150 The height, in metres, of the new De Rotterdam building. Designed by Dutch architect, Rem Koolhaas, it is due to be completed this Friday following a four-year development that has seen the gleaming "vertical city" rise from the Wilhelmina Pier. It will hold office space, luxury apartments, shopping outlets and a 280-room Nhow Hotel (derotterdam.nl).

Defence contractor bought US Navy secrets with prostitutes and Lady Gaga tickets, prosecutors say

'Larger-than-life' Malaysian company boss known as Fat Leonard is alleged to have worked with the commander of the Navy to move vessels around 'like chess pieces'

€8.8bn of royalty payments channelled through Bermuda by Google

Royalty payments amounting to €8.8bn were channelled to Bermuda by the US internet giant Google last year.

Royal Mail sell-off: Shared allocated for sovereign wealth funds

Some of the world’s most powerful sovereign wealth funds could receive shares as thousands of British investors are locked out of £3.3billion pay off.

Another pole for Sebastian Vettel ahead of Korean Grand Prix with Lewis Hamilton second

Sebastian Vettel secured his third successive pole position ahead of the Korean Grand Prix to move ahead of Lewis Hamilton in their qualifying duel this season.

Kimi Raikkonen says he will compete in Korea despite an ongoing back injury troubling him in Singapore

F1: Back injury will not prevent Kimi Raikkonen from competing in Korean Grand Prix

The injury is due to a testing crash he suffered in his debut year in 2001 while racing with Sauber

Deals of the week - Woodstock, Cathay Pacific sale, Miami

Less than £200... The Feathers Hotel in the Oxfordshire village of Woodstock has a "Culture Package", that combines tickets to the Francis Bacon and Henry Moore exhibition at the Ashmolean Museum, a night's B&B and a three-course dinner for £125pp until 18 January, 2014. Feathers.co.uk

The cheapest time to travel is between April and June

How to explore Australia

Our guide to getting there, getting in, and getting around

Global 'match-fixing ring-leader’ Dan Tan arrested in Singapore

Matches said to have been fixed include Champions League ties and World Cup qualifying games

Red Bull heir Vorayuth Yoovidhya skips court in death by dangerous driving case

An arrest warrant is being sought for an heir to the Red Bull energy drink fortune after he failed to appear for his indictment in the hit-and-run death of a policeman, a prosecutor said.

Family of Delhi gang rape victim demand death penalty as guilty teenager is sentenced to three years in juvenile institution

Ruling is first for five males standing trial for the assault of the 23-year-old student

Researchers have devised an equation for the 'correct' price for a one-way economy-class journey: $50 (£32), plus 11c (7p) for every mile of the flight. The results show that most passengers flying from Britain pay significantly less than the global average

Fares fair: UK air fares are below the 'correct' price for travel all over the world

Researchers set one-way economy class journey price at £32, plus 7p for every mile of the flight

Malaysia death toll rises: 37 killed as bus plunges into ravine

Accident occurred near popular tourist resort

City firms race to beat pay-out cap

Financial services providers in the UK have increased their salaries by an average of 20 per cent to mitigate the threat of an European Union bonus cap, it emerged yesterday.

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General Election 2015: Chuka Umunna on the benefits of immigration, humility – and his leader Ed Miliband

Chuka Umunna: A virus of racism runs through Ukip

The shadow business secretary on the benefits of immigration, humility – and his leader Ed Miliband
Yemen crisis: This exotic war will soon become Europe's problem

Yemen's exotic war will soon affect Europe

Terrorism and boatloads of desperate migrants will be the outcome of the Saudi air campaign, says Patrick Cockburn
Marginal Streets project aims to document voters in the run-up to the General Election

Marginal Streets project documents voters

Independent photographers Joseph Fox and Orlando Gili are uploading two portraits of constituents to their website for each day of the campaign
Game of Thrones: Visit the real-life kingdom of Westeros to see where violent history ends and telly tourism begins

The real-life kingdom of Westeros

Is there something a little uncomfortable about Game of Thrones shooting in Northern Ireland?
How to survive a social-media mauling, by the tough women of Twitter

How to survive a Twitter mauling

Mary Beard, Caroline Criado-Perez, Louise Mensch, Bunny La Roche and Courtney Barrasford reveal how to trounce the trolls
Gallipoli centenary: At dawn, the young remember the young who perished in one of the First World War's bloodiest battles

At dawn, the young remember the young

A century ago, soldiers of the Empire – many no more than boys – spilt on to Gallipoli’s beaches. On this 100th Anzac Day, there are personal, poetic tributes to their sacrifice
Dissent is slowly building against the billions spent on presidential campaigns – even among politicians themselves

Follow the money as never before

Dissent is slowly building against the billions spent on presidential campaigns – even among politicians themselves, reports Rupert Cornwell
Samuel West interview: The actor and director on austerity, unionisation, and not mentioning his famous parents

Samuel West interview

The actor and director on austerity, unionisation, and not mentioning his famous parents
General Election 2015: Imagine if the leading political parties were fashion labels

Imagine if the leading political parties were fashion labels

Fashion editor, Alexander Fury, on what the leaders' appearances tell us about them
Phumzile Mlambo-Ngcuka: Home can be the unsafest place for women

Phumzile Mlambo-Ngcuka: Home can be the unsafest place for women

The architect of the HeForShe movement and head of UN Women on the world's failure to combat domestic violence
Public relations as 'art'? Surely not

Confessions of a former PR man

The 'art' of public relations is being celebrated by the V&A museum, triggering some happy memories for DJ Taylor
Bill Granger recipes: Our chef succumbs to his sugar cravings with super-luxurious sweet treats

Bill Granger's luxurious sweet treats

Our chef loves to stop for 30 minutes to catch up on the day's gossip, while nibbling on something sweet
London Marathon 2015: Paula Radcliffe and the mother of all goodbyes

The mother of all goodbyes

Paula Radcliffe's farewell to the London Marathon will be a family affair
Everton vs Manchester United: Steven Naismith demands 'better' if Toffees are to upset the odds against United

Steven Naismith: 'We know we must do better'

The Everton forward explains the reasons behind club's decline this season
Arsenal vs Chelsea: Praise to Arsene Wenger for having the courage of his convictions

Michael Calvin's Last Word

Praise to Wenger for having the courage of his convictions