Volume 14 Issue 1, January 2024

Policies and psychological approaches often overemphasize individual agency, overlooking how socioeconomic inequality can constrain access to low-carbon alternatives. We argue that tackling these inequalities is urgent for impactful, equitable behaviour change.

The triple climate inequality crisis, or disparities in contributions, impacts and capacity to act within and between countries, is a central issue in addressing climate change. This Comment advocates for progressive wealth taxation as a viable solution to the finance gap.

Communal life is characterized by the shared timing of human and environmental events. Climate change is disrupting these timings, creating mismatches in these coordinated temporal patterns and requiring adaptive governance.

The shale gas revolution has provided a cheap and relatively clean alternative for coal, but it also threatens the future market for renewables. Recent projections indicate that without tightening climate policy, shale gas will indefinitely delay the transition to net zero.

The Madden–Julian Oscillation (MJO), a large storm system over the Indian Ocean and Western Pacific, plays a crucial role in our ability to forecast Earth’s weather 2–4 weeks in advance. Now, research suggests that the predictability of the MJO itself is increasing and will continue to increase with global warming.

Both warming and precipitation changes are affecting the global carbon cycle, although the impact of the frequency and intensity of climate extremes on carbon cycling is unclear. Now, research suggests that most extreme events enhance soil organic carbon losses under warming globally.

Funding large-scale negative emissions through a carbon market designed for traditional emission reduction strategies risks exacerbating long-term economic inequality. We suggest exploring alternative financing mechanisms that address this concern and that still ensure decarbonization at reasonable costs.

Justice issues are integral to a variety of climate science and policy processes. This Perspective provides a framework, based on philosophical theory, to explain key justice concepts and how they can be applied in climate discussions.

This Perspective evaluates efforts using machine learning to track global progress on adaptation, focusing on recent efforts in text analysis. It discusses practical and theoretical challenges, lessons learned and ways forward. It urges the adaptation community to prepare for a paradigm shift.

Negative emissions technologies at scale are seen as essential for the overall decarbonization effort to achieve the Paris Agreement targets. However, private ownership of these technologies could largely increase regional or international inequality by financing them through carbon markets.

Hydrofluorocarbons are a class of important greenhouse gases, and quantitative estimates of their social cost are still lacking. This research develops a set of direct estimates of their economic costs and shows their rapid phase-down could lead to large climate benefits.

Climate change is expected to strengthen atmospheric jet streams. Here the authors show that the fastest upper-level jet stream winds accelerate about 2.5 times faster under climate change than average winds, which could influence aviation and severe weather events.

The Madden–Julian Oscillation (MJO) is a key feature of tropical weather on a multi-weekly timescale. Here, the authors show that the MJO becomes more predictable with climate change, potentially allowing better subseasonal-to-seasonal forecasting.

It has been suggested that Antarctic ice sheets can become unstable and undergo irreversible retreat, but so far observational evidence for this mechanism is missing. Here, the authors show evidence that such an irreversible retreat occurred at Pine Island Glacier in West Antarctica in the 1970s.

Oxygen loss has been observed in the world’s oceans, due mainly to warming temperatures that reduce oxygen solubility and increase stratification. This study shows climate-induced salinity changes also impact oxygen patterns with effects either accelerating or counteracting warming-driven changes.

The impact of climate change on soil carbon remains uncertain. This study shows that soil carbon in forests increases in response to elevated CO₂, but the response to warming and nitrogen deposition depends on mycorrhizal associations, indicating a trade-off between soil and plant carbon.

Warming temperatures associated with climate change are expected to impact soil carbon stocks, yet the effect of more frequent and intense extreme climate events on soil carbon is yet unclear. This study shows that most extremes enhance soil carbon loss globally, with variation across ecosystems.