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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Isis is an hour from Baghdad, the Iraq army has little chance against it, and air strikes won't help

Isis an hour away from Baghdad -

and with no sign of Iraq army being able to make a successful counter-attack
Turner Prize 2014 is frustratingly timid

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The exhibition nods to rich and potentially brilliant ideas, but steps back
Last chance to see: Half the world’s animals have disappeared over the last 40 years

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Royal Ballet star dubbed 'Charlize Theron in pointe shoes' takes on Manon

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Royal Ballet star Melissa Hamilton is about to tackle the role of Manon
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It’s reasonable to negotiate with the likes of Isis, so why don’t we do it and save lives?

It’s perfectly reasonable to negotiate with villains like Isis

So why don’t we do it and save some lives?
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Is a sub-2-hour race now within sight?

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We shall not be moved, say Stratford single parents
Air strikes alone will fail to stop Isis

Air strikes alone will fail to stop Isis

Talks between all touched by the crisis in Syria and Iraq can achieve as much as the Tornadoes, says Patrick Cockburn
Nadhim Zahawi: From a refugee on welfare to the heart of No 10

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The Tory MP speaks for the first time about the devastating effect of his father's bankruptcy
Witches: A history of misogyny

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The sexist abuse that haunts modern life is nothing new: women have been 'trolled' in art for 500 years
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Endangered communities photographed 'like Kate Moss'

Jimmy Nelson travelled the world to photograph 35 threatened tribes in an unashamedly glamorous style