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NASA's Arsenic Life Claim Officially Retracted After 15 Years

7/29/2025

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Summary

Story summary

After 15 years of heated debate, NASA's groundbreaking 2010 claim of arsenic-based life in Mono Lake has been officially retracted by the journal Science. Critics pointed to contamination and flawed methods as key issues, sparking a divide in the scientific community. While some celebrate the decision, the original authors stand firm, insisting their findings were sound and rigorously vetted.

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Story summary

After 15 years of heated debate, NASA's groundbreaking 2010 claim of arsenic-based life in Mono Lake has been officially retracted by the journal Science. Critics pointed to contamination and flawed methods as key issues, sparking a divide in the scientific community. While some celebrate the decision, the original authors stand firm, insisting their findings were sound and rigorously vetted.