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    "headline": "NASA Rovers Find Organic Carbon in Distant Mars Craters",
    "dek": "NASA rovers Perseverance and Curiosity detected organic carbon in widely separated ancient lake systems on Mars.",
    "prose": "NASA rovers Perseverance and Curiosity have detected organic material in ancient sedimentary rocks in widely separated regions of Mars. [^1]\n\nResearchers introduced SHERLOC (Structured Hypothesis-driven Exploration and Reasoning for Localization), a training-free framework that pairs a reasoning LLM with compact repository tools and self-recovery capabilities. [^2]\n\nSHERLOC achieves 84.33% accuracy@1 on the SWE-Bench Lite benchmark and 81.27% recall@1 on the SWE-Bench Verified benchmark. [^3]\n\nOrganic material in two distant water-shaped environments suggests that carbon chemistry associated with habitability was not confined to one isolated basin. [^4]\n\nPerseverance made its measurements in Jezero Crater, where an old river carried sediment into a lake, while Curiosity made its discoveries in Gale Crater, where streams and groundwater fed another long-lived lake system. [^5]\n\nThe findings do not show that life existed at either location because organic describes carbon-containing chemistry, not a biological origin. [^6]\n\nInjecting SHERLOC locations and diagnostic findings into repair agents yields an average 5.95 percentage point gain in resolve rate from the best SHERLOC result per setting on SWE-Bench Verified. [^7]",
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      "statement": "NASA rovers Perseverance and Curiosity have detected organic material in ancient sedimentary rocks in widely separated regions of Mars.",
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      "statement": "Researchers introduced SHERLOC (Structured Hypothesis-driven Exploration and Reasoning for Localization), a training-free framework that pairs a reasoning LLM with compact repository tools and self-recovery capabilities.",
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