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Peruvian ice has preserved a global methane record

Nature, Published online: 02 September 2026; doi:10.1038/d41586-026-02695-y The first record of global methane in the tropics, collected from the summit of the mountain Nevado Huascarán in Peru, fills a crucial gap in historical methane data sets. It improves our understanding of the contribution of tropical sources to the past and current global methane distribution.