Once emitted, it persists in the environment for a long time - circulating through air, water, soil and living organisms - and can be dispersed over vast distances.

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In time, the circulating dollars or yen or euros handed out in financial rescues would create some healthy competition for other currencies.

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This was a story that had been circulating around the Internet for some time.

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Like microgeneration, the idea of such "smart grids" has been circulating in the energy community for some time.

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There followed a year on a fellowship at the Toronto Star in the mid-1990s, before returning home to set up a pop magazine called Blank - the highest circulating magazine of its type at the time in Northern Ireland.

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The Scottish Government said it was an isolated case and the virus was not circulating between susceptible animals as vector activity was low at this time of year and in the current temperatures.

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At the time, the only news we could sniff out was an old story about a private equity bid circulating late last year.

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Any time weather is damp and warm from spring thaw to the last gasp of summer mold spores can be circulating in the trillions.

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