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  • Climate change is having a profound impact on modern agriculture and plant health. Now research suggests that while crop yields may increase at high latitudes in light of climate change, these gains could be severely impacted by parallel shifts in disease risk.

    • Diane G. O. Saunders
    News & Views
  • Litigation is growing in importance as a way to achieve mitigation and equity in the face of ongoing climate change. Research now shows that currently cases are not using the latest state-of-the-art attribution science, and doing so could improve causation determination.

    • Lindene E. Patton
    News & Views
  • Crop production and food security remain one of the primary concerns in a changing world. Research and comments in this issue highlight the various threats to our produce and the carry-over effects of food shocks.

    Editorial
  • The authors model the impact of future temperature changes on infection risk for 12 major crops from 80 fungal and oomycete plant pathogens. They find increased risk, as well as crop yield, at higher latitudes and predict major shifts in pathogen assemblages in the United States, Europe and China.

    • Thomas M. Chaloner
    • Sarah J. Gurr
    • Daniel P. Bebber
    Article
  • The authors show increased negative extremes in gross primary productivity in northern midlatitude ecosystems, particularly over grasslands and croplands, attributed to impacts of warm droughts. This highlights the vulnerability of terrestrial carbon sinks and food security to increasing extreme events.

    • David Gampe
    • Jakob Zscheischler
    • Wolfgang Buermann
    Article
  • Current action is insufficient to meet both the Paris Agreement and the Sustainable Development Goals. Integrated model-based analysis shows that strong interventions across many dimensions, together with ambitious lifestyle change, are needed to enable real progress towards the UN Agenda 2030.

    • Bjoern Soergel
    • Elmar Kriegler
    • Alexander Popp
    Article
  • To align their portfolios with the Paris Agreement, investors need to know the emissions of companies they invest in. Estimating these should start from a precautionary principle that disincentivizes free-riding and protects the planet.

    • Andreas G. F. Hoepner
    • Joeri Rogelj
    Comment
  • The difference between tropical east and west Pacific sea-surface temperatures affects local and global climate, and most climate models suggest a weaker future gradient despite a recent observed increase. Research now suggests the recent trends are due to a transient delay in east Pacific warming driven by cold water upwelling and aerosols.

    • Malte F. Stuecker
    News & Views
  • Changes in extreme heat are often calculated as anomalies above a reference climatology. A different definition—week-day heatwaves surpassing the current record by large margins—shows that their occurrence probabilities depend on warming rate, not level, and are higher than during recent decades.

    • E. M. Fischer
    • S. Sippel
    • R. Knutti
    Article
  • In recent decades, India has witnessed a rapid pace of migration from areas with intensive agriculture to populated megacities, which are faced with increasing threat from climate hazards. Greater attention is needed for vulnerable new migrants who lack necessary resources when designing adaptation and mitigation policies.

    • Vittal Hari
    • Suman Dharmasthala
    • Rohini Kumar
    Comment
  • Climate change mitigation and adaptation, including through nature-based measures, are urgently needed. Now mapping and valuation of global vegetated coastal and marine blue carbon ecosystems shows how interlinked countries are when dealing with climate change.

    • Tiziana Luisetti
    News & Views
  • Blue carbon ecosystems take up and store substantial amounts of carbon. This represents an important ecosystem service in the context of climate change, with coastal ecosystems contributing nearly US$200 bn yr1 to blue carbon wealth.

    • Christine Bertram
    • Martin Quaas
    • Wilfried Rickels
    Article Open Access
  • Shipping routes through the Canadian Arctic are examined under 1, 2 and 4 °C global warming across four vessel classes, including ice breakers, Arctic community resupply ships, and passenger and private vessels. All routes show longer shipping seasons and navigability as a result of sea ice loss.

    • Lawrence R. Mudryk
    • Jackie Dawson
    • Mike Brady
    Article