But he said that the reasons for humans becoming addicted to any drug were more complex than simply their genetic make-up, and that a test for any gene uncovered by further research would not necessarily work.

BBC: NEWS | Health | Key differences in addicts brains

The charity Action Medical Research is funding further work, which it is hoped will lead to clinical trials.

BBC: NEWS | Health | Drug may help avoid prematurity

But some types of treatment appear to work for some people and further research could yield more breakthroughs.

ECONOMIST: Sex laws

The research was supportive of the work of further education colleges, but was sceptical about reports of progress.

BBC: UK colleges 'improving slowly'

But he cautioned the studies were preliminary, and he hopes that further research might help identify which of the statins would work best in each individual disease.

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By showing it is possible to conduct such research responsibly, Dr Griffiths has opened the door for further work to be done on the properties of psychedelic drugs.

ECONOMIST: Psychedelic drugs: The God pill | The

Martin's discoveries set in motion further research in this area and it was in the spirit of his work that a ship named Weatherbird II set sail for the tropical waters of the eastern Atlantic earlier this month.

CNN: Topical waters

The research team is continuing and expanding their work using human stem cells and further refining the repair cells for the heart.

FORBES: Researchers Mend A Broken Heart

But now the Washington policy institute, Center for Economic and Policy Research (CEPR), has proposed further trimming of the average workweek, noting that more play and less work could help slow global warming significantly.

FORBES: Study: Working Less Could Save The Planet