Over the past many years, the biogeochemical Fe cycle has gained prominence in discussions ranging from controls on primary production in the oceans and their impact on climate change (as expressed in the Iron Hypothesis) to the evolution of ocean chemistry through time. Much of this awareness is relatively recent, and indeed, little was known of the Fe cycle when the two authors of this first Geochemical Perspectives volume met in 1982 in the laboratory of Bob Berner at Yale University in New Haven, Connecticut. At the time, Rob Raiswell was a visiting scientist, preparing to return to Yale the...

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