Tag: David Johnston
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Science & Tech
A read on seawater sulfate
A tool developed by Professor David Johnston and colleagues might help shed light on biogeochemical cycling in oxygen minimum zones.
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Health
Rock sleuths
In one of the largest studies of its kind, Harvard researchers have found that carbon records from the mid-Neoproterozoic era can be “read” as a faithful snapshot of the surface carbon cycle between 717 million and 635 million years ago, a finding that directly challenges a decades-long belief of most scientists.