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The 26th United Nations Climate Change Conference of the Parties (COP26) will assemble in November 2021 to accelerate action on climate change. We are pleased to present a Collection of articles from our pages that cover adaptation, mitigation and extreme events; three aspects of climate change that will be of key relevance to negotiators.
Adaptation to climate change must be ramped up urgently. This Comment proposes three avenues to transform ambition to action: improve tracking of actions and progress, upscale investment especially in critical areas, and accelerate learning through practice.
Long-term no-tillage systems enhance cotton yield resilience to climate extremes through improved soil quality in Tennessee, USA, according to a 29-year rain-fed plot-scale cotton experiment.
Preservation of biodiversity by expanding protected areas is complicated by expected climate change that could dissociate ecoregion or biome from climate conditions in over half of land area, according to analyses of spatial climate analogs
A targeted focus on a transition of industrial structure and energy mix is the most promising pathway to achieving CO2 neutrality in China by 2060, suggests an analysis at the provincial level of achievements in emission reductions during 2013–16.
Burning sustainable aviation fuel blends with low levels of soot-producing aromatic components can result in a 50 to 70% reduction in soot and ice number concentrations and an increase in ice crystal size, suggest measurements of exhaust and contrail characteristics in two aircraft campaigns.
The probability of not exceeding the 2 °C climate warming target if all countries meet their nationally determined contributions and continue to reduce emissions lies at around 26%, according to an analysis with a statistically-based probabilistic framework.
Complete savannization of the Amazon Basin would enhance the effects of climate change on local heat exposure and pose a risk to human health, according to climate model projections.
Multiple climate contributors to fire risk in southeast Australia have led to an increase in fire extent and intensity over the past decades that will likely continue into the future, suggests a synthesis of climate variability, long-term trends and palaeoclimatic evidence.
Concurrent coastal extremes - storm surges and flooding from precipitation - are 2.5 times as frequent in latitudes higher than 40∘N under a high emission scenario by 2100 compared to today, according to an analysis of climate and ocean model output.