All fish contain some mercury, but too much can cause delays in the developing brain of young children.

CNN: Seafood benefits outweigh risks, government says

Diarrhoea is a major cause of death and serious illness in developing countries.

BBC: Go-ahead for GM diarrhoea vaccine tests

There is no one cause of conduct disorder, but the following can increase the risk of a child developing it.

BBC: Mental health: Conduct disorders

It is also installing stern flaps on its amphibious vehicles that can reduce fuel use by 2-3%, and developing better coatings to prevent the growth of algae and barnacles on hulls that cause drag and increase fuel consumption.

ECONOMIST: Monitor

Brin became passionate about the cause in 2005 when he discovered he carries the flawed gene that gives him a 50% chance of developing the brain disease.

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Although pleural plaques do not cause or develop into a more serious asbestos-related condition, they do signify an increased risk of developing mesothelioma because of exposure to asbestos.

BBC: Asbestos compensation law passed