Many countries are relying on land-based strategies to meet the climate targets set out in the Paris Agreement, putting pressure on land resources. Here the authors show a global reduction in cropland area under current climate pledges, with implications for trade and food security.

This study quantifies and values the carbon stored in the ocean due to biological processes. With uptake in the order of 2.8 Gt per year, valued at around US$1 trillion annually (at a carbon price of US$90 per ton of CO₂), this service should be included in the global stocktake and climate actions.

Oceans are on the front line of new planned climate actions, but understanding of novel marine-climate intervention development and deployment remains low. Here a survey among intervention practitioners allows identification of science and governance gaps for marine-climate interventions.

Rising wealth inequality is a major challenge for this century, and climate change could further exacerbate it. Based on an overview of existing studies, this Perspective proposes a framework to advance understanding of wealth inequality in relation to climate change and climate policies.

The urban heat island (UHI) effect can increase and decrease mortality depending on the season, yet global comparison is still lacking. This study finds that the UHI effect has net positive impact by reducing more cold-related mortality and highlights the necessity of place-based adaptive cooling strategies.

Coastal communities are at risk from extreme coastal storms. This study leverages US tide gauge data from 1950–2020 to show that likelihood estimates of storm surge extremes have been underpredicted at 85% of gauge sites and finds regional likely changes in their frequency over that historical monitoring period.

The authors assess the current and future burden of mental and behavioural disorders across Australia. They show that high temperatures contributed 1.8% of Australia’s mental and behavioural disorder burden in the 2010s with expected increases to 2.4–2.8% by the 2050s and highlight the need for both adaptation and mitigation.

Using satellite and carbon-flux data, the authors show that enhanced gross primary productivity in recent decades is driven primarily by increases in the rate, rather than the duration, of carbon uptake. They highlight asymmetric changes in productivity across seasons, which may worsen under climate change.

Climate change and climate action are socially and politically divisive topics in many countries. In addition to contributing to political disparity, climate research is also affected by political context, with consequences not only for scientists but for society as well.