A study of Irish bogs has thrown doubt on claims that global warming is being
caused by increased solar activity

CLAIMS that increased solar activity could explain the world's warming
climate are challenged by a study of Irish bogs. The research, which is a
fresh blow to climate sceptics, shows that while there are cyclical changes
in both climate and the sun's activity, there is no obvious link between the
two.

"The data shows that there is no simple one-to-one relationship, as some
researchers have touted," says Chris Turney of the University of Wollongong
in New South Wales, Australia, who led the work.

Other studies have claimed to find a link, but what sets this one apart is
that the figures for the sun's heat output and those for climate are from the
same source - trees growing in the bogs. This avoids any problems of
accurately matching the dates of climate data from one source to solar
activity from another, Turney says.

Firstly, the Irish trees already form part ...
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