fossils

Fossils

1 Years ago

Oxygen loss in the coastal Baltic Sea is 'unprecedentedly severe'

The Baltic Sea is home to some of the world's largest dead zones, areas of oxygen-starved waters where most marine animals can't survive. But while parts of this sea have long suffered from low oxygen levels, a new study shows that oxygen loss in coastal areas over the past century is unprecedented in the last 1,500 years.

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