17 October 2011 Updated at 12:27 ET
Climate change 'grave threat' to security and health
Richard Black
Environment correspondent, BBC News
Food security was interwoven with the climate issue, speakers told the conference
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Climate change poses "an immediate, growing and grave threat" to health and security around the world, according to an expert conference in London.
link-
http://www.bbc.co.uk/news/science-environment-15342682