The release of methane trapped in Martian subsurface reservoirs following planetary obliquity shifts may have contributed to episodic climate warming between 3.6 and 3 billion years ago, explaining evidence for ancient ice-covered lakes.
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Fairén, A. Icy Mars lakes warmed by methane. Nature Geosci 10, 717–718 (2017). https://doi.org/10.1038/ngeo3037
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DOI: https://doi.org/10.1038/ngeo3037
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