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  • Decarbonizing global steel production requires a fundamental transformation. A sectoral climate club, which goes beyond tariffs and involves deep transnational cooperation, can facilitate this transformation by addressing technical, economic and political uncertainties.

    • Lukas Hermwille
    • Stefan Lechtenböhmer
    • Hitlon Trollip
  • The recent IPCC report highlights the importance of demand-side solutions in mitigation strategies. Understanding the motivation and capacity of these solutions is essential, and could help to promote collective and practical actions for this critical decade.

  • Numerous examples highlight leadership and real climate action in the Global South. With financial support from and partnership with countries in the Global North, this leadership can be a cornerstone for getting on track to meeting the Paris Agreement.

    • Chad Jonathan Frischmann
    • Mamta Mehra
    • Abdulmutalib Yussuff
  • Monitoring progress in the Glasgow ‘Declaration on Forests’ remains impossible without open sharing of data. Three actions are required if this declaration is to succeed.

    • Gert-Jan Nabuurs
    • Nancy Harris
    • Ruben Valbuena
  • Shifts in phenology can impact organism fitness, ecosystem function, and goods and services from nature. Climate change management must better integrate phenology to optimize conservation outcomes as these impacts increase.

    • A. K. Ettinger
    • C. J. Chamberlain
    • E. M. Wolkovich
  • Jean Combes’s love of nature as a child led her to note the signs of starting spring. Her long-term records are now part of a vital growing citizen science dataset that starkly shows how climate change is shifting the timing of the natural world.

    • Tegan Armarego-Marriott
  • Phenology — the timing of important life events — is shifting in response to climate change. For trees, these shifts in spring awakening and autumn senescence have implications for productivity and carbon capture, as well as for the survival of the trees themselves, and the quality of the services they provide.

  • Millions of people rely on potentially sustainable harvesting for their income and energy. Yet specious assumptions about deforestation continue to drive ineffective bans on these practices. This occurs at the peril of the climate and the poor.

    • Geoff J. Wells
    • Casey M. Ryan
    • Janet A. Fisher
  • Global CO2 emissions in 2021 were only 1% less than the record levels of 2019, driven by increases in power- and industry-related emissions from China and India and a return of the carbon intensity of electricity to pre-pandemic levels. Is this resumed growth in fossil energy, or a final fleeting surge before a long decline?

    • Steven J. Davis
    • Zhu Liu
    • Philippe Ciais