Video. Researchers at the University of Southampton have been conducting a series of experiments to find out whether the same methods used by dolphins and bats could help blind people to see.
The team have been using both blind and sighted volunteers to see how well they can pinpoint sounds through locating their echo. Mel Bloor reports.
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Transport Secretary Chris Grayling believes Network Rail should share the responsibility with private train operating companies.
Commuters are facing a miserable journey this morning as a three-day strike begins in protest over driver only trains.