Governments around the world have pledged to reduce fossil fuel subsidies, yet the actual implementation has not been measured. With a unique dataset and approach, researchers find since 2016 there are more frequent reforms, yet most of them do not survive over 12 months.

As marine-terminating glaciers retreat, they reveal new coastlines in many regions. Here the authors use satellite data to quantify these changes for the Northern Hemisphere, finding that between 2000 and 2020, a total of 2,466 km of new coastline has been uncovered.

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.

It has been argued that parts of the climate system can experience rapid changes and that such tipping can be anticipated by early warning signals. Here the authors discuss the limitations of such indicators and common pitfalls in their application.

The authors combine horizontal and vertical climate velocities to understand how marine species shift in response to climate change. They show that vertical velocity, which is often overlooked, better explains climate responses, with implications for species adaptation and fishing resources.

How mountain glaciers will react to temporarily overshooting 1.5 °C of warming is poorly understood. Here the authors show irreversible global glacier loss for centuries after overshoot, implying long-term reductions in glacial water resources with amplified impacts in regions where glaciers regrow.

Climate mitigation through natural climate solutions in crop-lands may be a way to reconcile climate goals with food security. However, here the authors show that some natural climate solution practices tend to lower yields and that maintaining yields lowers the potential GHG mitigation.

Using seven generations of selected zebrafish (Danio rerio), the authors consider the trade-offs and mechanisms behind evolution of warming tolerance. They show unexpected improvements in cooling tolerance in warming-adapted fish, and highlight mechanistic insights behind warming tolerance.

The gap between adaptation policy planning and actual implementation could delay effective actions. Researchers demonstrate why internal consistency checks should be the starting point to reduce the gap by applying them for city-level adaptation plans across Europe.

The authors assess the risk of overshoot beyond 1.5 °C warming, using three scenarios with minimal overshoot, brief overshoot and sustained overshoot. They show a risk of long-term Amazon dieback, which begins as early as 1.3 °C warming but is largely mitigated by reducing temperature below 1.5 °C.

Many voices are needed in the climate change discussion to reach across society. Pope Francis is one example who offered his voice and support, in the conversation that needs to continue.