This section is a personal account of my time in science and the science of my time over the past fifty years. In retrospect, I could try to describe my scientific career as well planned and structured. Yet, the truth is that major shifts in my life, both personal and professional, were directed by opportunities that showed up unexpectedly or developments that I had not foreseen. That was how I came to study sediment biogeochemistry in Aarhus, and how I went to work in Germany for fifteen years and then come back to Aarhus. What really created scientific continuity through...

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