River discoloration in the Arctic

Rust in Arctic streams from permafrost thaw

  • Jonathan A. O’Donnell
  • Michael P. Carey
  • Brett A. Poulin


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    We are welcoming submissions to our curated open collections, including:

  • * Exceptional climate conditions in 2023
  • * Food security and resilience
  • * Coastal blue carbon
  • * Progress towards the Sustainable Development Goals


  • A combination of anthropogenic warming and natural variability led to another record-breaking year of warmth in 2023. Global mean temperatures in 2023 nearly exceeded the 1.5 °C threshold, making it both a scientific and societal imperative to understand the underlying reasons for this warmth.

    • Joy Merwin Monteiro
    CommentOpen Access
  • Attribution of the record-shattering global annual heat in 2023 to human and/or natural factors is fundamentally required for reliable predictions of upcoming global warming and its impacts. An observation-model comparison of global hot areas supports a key role for human-induced climate change, with a small contribution from El Niño.

    • Seung-Ki Min
    CommentOpen Access
  • In northern China and the Korean Peninsula, air pollution has worsened over the past ten years, but the two countries have not cooperated efficiently to resolve the problem. China and Korea must separate environmental negotiations and diplomatic actions to address the transboundary nature of air pollution.

    • Martina Grecequet
    Research HighlightOpen Access
  • Oxygen levels in the ocean increased three times between the early Ediacaran and the early Cambrian, in synchrony with major developments in animal evolution.

    • Carolina Ortiz-Guerrero
    Research HighlightOpen Access
  • In 2021, one in five people in Africa was affected by hunger, and the continent had the highest prevalence of undernourished people globally. We argue that food systems in Africa can be more resilient if their development includes climate adaptation.

    • Obed M. Ogega
    • Lise Korsten
    • Jessica Thorn
    CommentOpen Access
  • Large language models can summarize, aggregate, and convey localized climate-related data to people in a cost-effective and expeditious manner. This Comment introduces a simple, proof-of-concept prototype and argues that the approach holds the potential to truly democratize climate information.

    • Nikolay Koldunov
    • Thomas Jung
    CommentOpen Access
Man turning a carbon dioxyde knob to reduce emissions. CO2 reduction or removal concept. Composite image between a hand photography and a 3D background.

Carbon dioxide removal, capture and storage

In this cross-journal Collection, we bring together studies that address novel and existing carbon dioxide removal and carbon capture and storage methods and their potential for up-scaling, including critical questions of timing, location, and cost. We also welcome articles on methodologies that measure and verify the climate and environmental impact and explore public perceptions.
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