Hear the BBC report at
http://news.bbc.co.uk/media/video/39877000/rm/_39877209_blackholes18_nelson_vi.ram
And a text version at
http://news.bbc.co.uk/1/hi/sci/tech/3501313.stm
And the same story from Science at NASA
http://science.nasa.gov/headlines/y2004/18feb_mayhem.htm?list907772