This week viewers to BBC World News have been watching a series of reports focusing on the Arab uprisings, two years after they first began. Correspondents have been in Damascus, Tunis, Cairo, the Syria-Lebanon border and elsewhere. Their eyewitness TV reporting is accompanied by further explanation and analysis on our website, bbc.com/news. These are expert journalists, with years of experience and knowledge, living the story on behalf of the audience. They demonstrate our commitment to reporting the world, and bringing clarity to complex events.

Until now, however, viewers in the world's biggest TV market, the US, have found it hard to access BBC reporting of this kind. The market is saturated with TV channels, but for the past couple of years we've been very focused on securing widespread carriage on the distribution systems which bring TV into most homes.

So today the BBC is delighted to announce we have agreed to a partnership with the US cable giant - Time Warner Cable - and through this and other deals, a further 10 million homes in the US will have access to BBC World News 24 hours a day, seven days a week.

This means by the end of this year we will be available in 25 million homes, including those in most of the major markets - New York, Washington DC, Los Angeles, Chicago, Boston. There is still some way to go before we can say we have reached everyone - but 2012 has been a year of significant breakthroughs for us in the US.

The BBC is already well-known in America through its partnerships with public radio, through the success of our website BBC.com/news, and because of our nightly broadcast on public television fronted by Katty Kay. We believe our brand of high-quality, intelligent and non-partisan journalism has something to offer US audiences, and we're determined to make access to our services as simple as possible.

The timing could not be better. We're just a few weeks away from the first broadcasts of BBC World News from our brand new headquarters in central London. Three new studios, a big investment in production and journalism, and working more closely with BBC journalists working in English and 27 other languages - it's more than just a new home, it's a new start. We're delighted to share that even more widely.

Richard Porter is controller of English at BBC Global News

We've had a huge response to our class calculator this week, particularly across social media, following a major survey by BBC Lab UK. The survey suggests that traditional categories of working, middle and upper class are outdated and we all fit in to one of seven new classes.

The class calculator - which lets you work out where you might fit in amongst the new categories - has attracted about six million page views on the BBC News site, making it the second most popular article of 2013 to date. (The most viewed article this year has been the helicopter crash in Vauxhall in January.) Nearly 1.9 million of those views have come from those of you accessing the site on mobiles and tablets.

But one thing that really stands out is how widely the story has been shared across social media, with more than 300,000 shares so far. More than a quarter of links to the calculator have come from social networking sites.

More than half a million referrals came from Facebook alone, and about 107,000 from Twitter. This is a much higher number than we usually see shared across social media. If you compare the class calculator with the other top stories of the week, usually about 5% of known referrals come from social media sites.

So why has it proven so popular with our audience? Michael Orwell, a producer at BBC Lab UK, worked closely on the survey and said one of the best things about the project was that the audience contributed to new research with top academics.

The calculator itself, produced by the BBC News Visual Journalism team in collaboration with BBC Knowledge and Learning, lets everyone engage with the new model and discover where they might fit in.

Steve Herrmann is editor of the BBC News website.

As of Thursday, the Editors' blog will move to a different address on the BBC News website.

While this page will no longer be updated, it will stay here for reference.

University fees are rising to £9,535, meaning students will be left in more debt after their course.

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David Coote's alleged video on Liverpool and former manager Jurgen Klopp fuels conspiracy theorists who question referees' integrity, says Phil McNulty.

Hundreds of head office workers are facing cuts and loss-making branches are under threat of closure.

His resignation comes after a damning report into a prolific child abuser associated with the Church.

As the dust settles on a post-election stock market rally, some firms have already gained.

Maria Kolesnikova, jailed for her part in mass political protests in 2020, was allowed to see her father.

The government has confirmed Sue Gray will not take up her post as the PM's envoy to the nations and regions.

Nik is worried assisted dying could lead to coercion - but Elise, who has cancer, wants the choice.

The first book set in space to win, Orbital follows astronauts in the International Space Station.

Chinese society is reeling from a series of deadly attacks. The reaction from authorities is often suppression.

Justin Welby said he had to take responsibility for failures since he was notified about abuse committed by John Smyth.

Britain's para-cyclists put in a strong performance at the World Championships in Los Angeles but the competition is improving.

Dan Pepper faces crunch time at the GB swimming trials as an athlete with a learning disability.

Eleven-time Paralympic gold medallist Dave Roberts fails to hit the qualifying time in the 50m free at the Paralympic trials in Sheffield.

Defending Paralympic champions Dave Roberts and Liz Johnson must wait on the British Swimming selectors to see if they have made it on to the team for London 2012.

Dave Roberts, an 11-time gold medallist, is left out of the Great Britain team for the 2012 Paralympic Games.

Video shows the San Francisco Church in Iquique, Chile engulfed in flames, with smoke rising above it.

The former One Direction star has died after falling from the third floor of a hotel in Argentina.

The BBC's Georgina Rannard shows a virtual rendition of Valeriana - which has been discovered centuries after it disappeared under the jungle canopy in Mexico.

Colombia is hosting talks to assess global progress in protecting 30% of all land and water by 2030.

Claudia Sheinbaum inherits a buoyant manufacturing sector, but also a troubled state-owned oil firm.

Argentine side Deportivo Riestra are accused of a "lack of respect" after picking a YouTube star as a striker in a top-flight match.

The former UN official was brought in to lead Haiti through an ongoing, gang-led security crisis.

El Litoral prison is notorious for its deadly confrontations between members of rival gangs.

England's hockey squad is going "in at the deep end" at the Champions Trophy in Australia, says coach Jason Lee

Campbell Walsh, K1 silver medallist at the Athens Olympic Games, announces his retirement from canoeing.

San Francisco Giants clinch their second World Series title in three years, sweeping Detroit Tigers 4-0.

The racing outside the top class threatens to be as fierce as ever as British riders target the Moto2 and Moto3 titles this year

Belgian Tom Boonen becomes only the second rider to win the Paris-Roubaix classic for the fourth time.

Cyclist Sir Chris Hoy's first bicycle was a girl's bike the Olympic gold medallist's mother reveals.

Dereck Chisora appeals against the withdrawal of his licence by the British Boxing Board of Control.

Thanks to Sivakumar ji for the ID

Left me pondering

Cheltenham Gold Cup winner Synchronised has a chance to complete a rare double after remaining among the Grand National entries.

A hip fracture rules bookies' favourite Prince De Beauchene out of the Grand National on 14 April.

Sir Alex Ferguson's Harry The Viking is among the likely runners at the Scottish Grand National.

Russia and Cyprus have announced that they have resolved a dispute concerning the two countries' double tax agreement.

Russia's Ministry of Finance has said it is prepared to terminate the Dutch tax agreement if ongoing negotiations fail.

The European Commission is taking action against the Netherlands for failing to fully implement the Fourth Anti-Money Laundering Directive in respect of the availability of information on entities' beneficial owners.

The Netherlands and Poland have agreed to make changes to their tax treaty, to add provisions to prevent tax base erosion and profit shifting (BEPS), and amend provisions relating to the taxation of pensions income.

Luxembourg's Direct Tax Administration has issued guidance covering various aspects of the European Union sixth Directive on Administrative Cooperation, under which intermediaries are required to report cross-border tax planning arrangements.

On November 17, 2020, Luxembourg's tax authority published Circular LG – Conv. DI no. 66, outlining the changes made by the BEPS multilateral instrument (BEPS MLI) to the double tax agreement in place with Switzerland.

On July 16, 2020, the German Ministry of Finance posted answers to frequently asked questions on its website with regards to the temporary value-added tax cut.

Germany and Pakistan have deposited their instrument of ratification with the OECD to bring into force the BEPS multilateral instrument for their networks of tax treaties.

Shot from village Timila in Ranikhet Tehsil of Uttarakhand