Here's my report on new research that suggests young people who smoke cannabis run the risk of a significant and irreversible reduction in their IQ. The findings come from a study of about 1,000 people in New Zealand.
Although cannabis is widely used in the UK, possession can lead to up to five years in jail. The research has been seized on by both sides of the debate over whether to legalise cannabis.
In the sultry Athenian air, this feels like a place holding its breath.
Greeks have always scrawled on walls. But after sunset this troubled summer, masked graffiti agitators have roamed the capital's streets applying their urgent exhortations to every flat surface they can find.
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