I have noticed that BBC will frequently not use closing quotes when quoting long paragraphs of text, as an example it occurs twice in this article: http://www.bbc.co.uk/news/science-environment-30816255
"One application we are working on is indoor navigation which means we have sensors within the shoe that measure the acceleration of the foot, the angular velocity - whether you're turning the foot or not - and the magnetic field.
"Generated power scales with size, but if you want to be able to reasonably integrate such a device within a shoe sole, you have to work with strict constraints, like a small height and limited length of the device.
Is this correct? This is not just an editor's oversight, they do it frequently. Why do they omit the closing quote, is it because the end of the paragraph implies the end of the quote?