Last year Iran was found building a hitherto secret uranium-enrichment plant on a military compound outside Qom.
The researchers included in their model a hitherto-neglected effect proposed by a German physicist, Arnold Sommerfeld, in the 1930s.
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Mr Cheng has now admitted to owning a hitherto undisclosed consultancy, and to passing on government documents to business contacts.
The election of Mr Serwotka, a hitherto unknown benefits agency worker and fast-talking union official in Leeds, was a big surprise.
Other artefacts, including pottery and an entrance to a hitherto unknown crypt were also found in the church, which dates back to 1100.
But some other areas on our list are benefiting from a hitherto unnoted shift of high-end services to lower-cost and often lower-density regions.
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However, occasionally a hitherto obscure constituency might find that its resolution had gained the prime spot in one of the key debates of the week.
BBC: News | LABOUR CENTENARY | A political correspondent reflects...
It is a humorous, poignant bringing-together of Peckham old and new, a hitherto unloved working class urban district on the verge, perhaps, of achieving international prominence.
But a big cause of the crime drop seems to be that the police were able to draw on a hitherto overlooked pool of local wisdom.
And fossil finds from Red Deer Cave, also in China, and Iwo Eleru in Nigeria point to a hitherto unappreciated diversity among Late Pleistocene humans.
The new compound works by a hitherto unknown pathway of chemical reactions in the brain cells, particularly those in those parts of the brain which are related to appetite.
Now that deal has run into trouble, complicated by new concerns about North's pledge to develop, test and export ballistic missiles - its first official admission of a hitherto clandestine trade.
It provides evidence for a hitherto missing ingredient: clouds.
Because the Mac team has always understood that really great design makes an object seem like a hitherto-unknown part of oneself, a new way to encounter and express yourself in the outside world.
At the Star, a hitherto also-ran among supermarket tabloids, Ms Fuller's strategy has been to do celebrity journalism better than the rest (unlike rival People magazine, there is no space given to ordinary people).
And persuading public servants to abandon their paper-shuffling ways and embrace change on a hitherto unimagined scale will require relentless pressure as well as some of the carrots and sticks that keep people going in the private sector.
Other theorists, such as Georgi Dvali of New York University and Joao Magueijo of Imperial College, London, say a changing alpha might come from a hitherto unknown force of nature that could modify the law of gravity.
Meanwhile a group calling itself the "Rassemblement des Forces Democratiques de Guinee" had been phoning international radio stations, and a hitherto unknown spokesman, Mohamed Lamine Fofana, had been claiming the attacks were the work of the Guinean opposition.
Slovakia hardly provided the sternest of tests, but England got the job done with the minimum of fuss and Capello can now turn his attentions to making it five wins out of five in a hitherto flawless World Cup campaign.
The remix version, concoted by a hitherto little-known Berlin composer called Bardo Henning, is a 15-minute pot-pourri which mingles the melody of the current national anthem (by Joseph Haydn) with that of the old East German one (by Hanns Eisler).
The alarming statements by the WHO and other UN agencies last week may in part have been prompted by a widespread feeling that health authorities in Asia failed to act quickly enough last year to contain the SARS virus, a hitherto unknown human infection.
This state of affairs will not have reassured a delegation of leading American non-Orthodox rabbis who emerged from a meeting with Mr Netanyahu on that famous night with a commitment that the government will solve, by September, a hitherto insoluble conflict between the Judaism of Israel and the Judaism of much of diaspora Jewry.
It is also a substance hitherto regarded as too toxic for people to tolerate.
Recently, moreover, a young Finnish maestro, Esa-Pekka Salonen made a remark hitherto almost as unthinkable as Mr Abbado's.
Another, more surprising, is the spread of liberal economic views in a society hitherto used to doing business through cartels and political patronage.
They promise a lifestyle hitherto uncommon in Mumbai condos.
France has recently touted Manaf Tlass, a defecting Sunni general from a powerful family hitherto close to the Assads, as a transitional figure an idea soon dismissed, however, by virtually all of the opposition.
The population is also relatively old, so health care, hitherto a Democratic subject, has been an important issue.
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