By BBC News
The number of people with medical problems linked to the 9/11 attacks on New York has risen to at least 15,000.
The figure, put together for the BBC, counts those receiving treatment for problems related to breathing in dust.
Many of the victims say the government offered false reassurances that the Manhattan air was safe and are now pursuing a class-action lawsuit.
Full Story: http://news.bbc.co.uk/1/hi/sci/tech/4904188.stm