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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Simon's Blog - Bird Watching
A British soldier will not be prosecuted over the death of a comrade from West Sussex on an Afghan battlefield four years ago.
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