• Email Bluesky Facebook LinkedIn Reddit Whatsapp X This is a summary of:Patterson, J. • Atmospheric H2variability over the past 1,100 years.Nature650, 898-902 (2026). • Access options Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access subscription 27,99 €/ 30 days cancel any time Subscribe to this journal Receive 51 print issues and online access 185,98 € per year only 3,65 € per issue Rent or buy this article Prices vary by article type from$1.95 to$39.95 Prices may be subject to local taxes which are calculated during checkout doi: https://doi.org/10.1038/d41586-026-00578-w ‘Expert opinion’ is published under a CC BY 4.0 licence. • References Paulot, F.et al.Int. • Hydrogen Energy46, 13446-13460 (2021).ArticleGoogle Scholar Paulot, F.et al.Int. • Hydrogen Energy46, 13446-13460 (2021).

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    • RESEARCH BRIEFINGS The first ice-core record of historical atmospheric hydrogen levels Access options Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access subscription 27,99 € / 30 days cancel any time Subscribe to this journal Receive 51 print issues and online access 185,98 € per year only 3,65 € per issue Rent or buy this article Prices vary by article type from$1.95 to$39.95 Prices may be subject to local taxes which are calculated during checkout doi: https://doi.org/10.1038/d41586-026-00578-w ‘Expert opinion’ is published under a CC BY 4.0 lice

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