I saw this story on the BBC News iPhone App and thought you should see it.
** 'Twisted light' idea faces doubts **
An idea to put a "twist" into radio and light waves to vastly boost the amount of data they can carry is called into question by a number of scientists.
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http://www.bbc.co.uk/news/science-environment-20217938 >
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Sent from my iPhone: please disregard any typos.