Such figures are impossible to verify, but the unnamed Afghan official says it is clear there are more insurgents in this area now than there were a year ago.

NPR: Civilian Casualties Stir Angst In Afghanistan

Until we have a precise diagnostic test for ADD, however, it will be impossible to give truly accurate figures.

NPR: Excerpt: 'Delivered from Distraction'

Many would argue that there is a public interest for private detectives to be employed to uncover information relevant to a judgement about the probity of politicians or public figures, if it is impossible to be obtained in more conventional journalistic ways.

BBC: Detective firm invoiced��Mirror��230 times in two years

But it's almost impossible to verify and keep up with the latest death figures.

CNN: STORY HIGHLIGHTS

Deputy Chris Brock also criticised the report, saying it is impossible to look so far into the future and predict accurate figures.

BBC: NEWS | Europe | Guernsey | States passed population strategy

Unlike other known political figures such as Sir Winston Churchill, she said, it was impossible to tell how popular the items would be.

BBC: Thatcher outfits to be sold at Christie's

Although it is impossible to calculate accurately, the proportion permitted to stay is much higher than the headline figures imply.

ECONOMIST: Time for some honesty on asylum