NEW YORK -- The furor over how close is too close to ground zero for a planned Islamic centre and mosque has raised a simple question nine years after Sept. 11: Where exactly is ground zero?

The lines marking the site of the 2001 terror attacks change depending on which New Yorker, 9/11 family member and American you talk to. Even those who know it best can't agree on its boundaries. Tourists who come to snap pictures outside of a busy construction site often aren't sure that they're there.

Andrew Slawsky, 22, stood outside the proposed mosque and Islamic centre two blocks north of the World Trade Centre site. He said ground zero isn't here.

"To me, ground zero is any si ...

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