Ancient Ocean

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China Mars mission data offers evidence for ancient ocean

China Mars mission data offers evidence for ancient ocean

Ancient ocean floors could help in the search for critical minerals

Fossil snail shells offer new tool for analyzing ancient ocean chemistry

Chilly, damp Mars may have hosted an ancient ocean

An 18-foot-long sea monster ruled the ancient ocean that once covered Kansas

Nitrogen inputs in the ancient ocean

Nitrogen Inputs in the Ancient Ocean: Underappreciated Bacteria Step Into the Spotlight