Tree ring data from Patagonia in South America show cold periods from 1270 to 1380 and from 1520 to 1670.

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In fact, a recent study conducted by German researchers using tree ring data reveals that 2, 000 years ago Romans wore cool togas with good reason.

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In North America, Laki has been blamed for the starvation of Inuit populations from severe cold in northwestern Alaska, based on Inuit oral history as well as tree-ring density data investigated by Gordon Jacoby and others, who estimated that conditions were about 4 degrees Celsius colder than the mean.

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Additionally, the authors specifically excluded data, such as tree ring examinations, that have proved controversial in recent years.

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One of the Manx shearwaters recorded in the latest edition of the British Trust for Ornithology's Ringing Report, which summarises data collected in 2003, was given its ring in 1953.

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LHC's underground ring will spew out petabytes (billions of megabytes) of data per second enough to fill all the hard-drives in the world within days.

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Grokker acts as a plug-in that sits on top of a search engine and, by reading tags written into the data with the XML software language, arranges the results of a search into a ring of spheres or an array of squares labeled to show each one's relationship.

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