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Salt creep: how sea-level rise is quietly rewriting the chemistry of every river estuary on Earth
An MIT team mapping microbial life across thousands of river-to-sea gradients finds that even small salinity shifts could reorder the invisible engines of coastal ecosystems.

Desk note: Monexus framed this as a planetary-scale ecological story with concrete policy stakes in named delta regions, rather than as a profile of the MIT lab. The wire lede emphasised the salinity threshold; Monexus added the comparative biogeography angle and the uneven regional implications for South and Southeast Asia and the US Atlantic coast.
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