'Science fiction writers have often imagined a world where pop pill to cure or curb a range of ills. But, according to a new book The Compass Of Pleasure, that futuristic world may not be far off.

The book, by Johns Hopkins University neuroscientist David J. Linden, explores the search for drugs that may alter behaviour by working on the brain.'

Read more: Coming - Behavioral Modification Drugs Like 'Liquid Trust'