nickel in nature

I have a short book review in the last edition of Chemistry and Industry of 2008:

Gross M:
Chemistry & Industry No 24 (22.12.), 29
review of "Nickel and its surprising impact in Nature" by A. Sigel, H. Sigel, and R.K.O. Sigel, eds.

Here's a snippet:
"The biological role of nickel isn’t one of the boxes that science gets filed into; I suppose there aren’t any departments dedicated to nickel biochemistry. All the more interesting then, to use this metal to slice across the established classifications and think outside the box for a while. "