ScienceAugust 16, 2026
biogeochemists
by-oh-jee-oh-KEM-ists
Definition
Scientists who study the biological, geological, and chemical processes that control the composition of the natural environment.
Etymology
The word is a compound derived from the Greek 'bios' (life), 'ge' (earth), and 'chemeia' (alchemy or chemistry), reflecting the interdisciplinary nature of the field.
In the news
The article cites studies conducted by biogeochemists to document the precise oxygen thresholds and chemical boundaries of the Black Sea's deep-water layers.
At the bottom of the Black Sea, below about 150 metres, the water contains no oxygen at all, and shipwrecks preserved in that dead zone include a 2,400-year-old Greek merchant vessel found in 2018 with its mast, rudder and rowing benches still intact on the
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