Editorial |
Featured
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Comment |
Booming solar energy is encroaching on cropland
The rapid spread of solar power plants onto cropland is having increasingly detrimental impacts. Targeted policy and technological solutions are urgently needed to resolve the tension between renewable energy and food production.
- Ning Zhang
- , Huabo Duan
- & Xuemei Bai
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Comment |
Geology for the wellbeing economy
The recent emergence of a new economic model that is focused on the pursuit of human and ecological wellbeing — the wellbeing economy — offers a fresh framework for geology to contribute to society. The challenge will be to extend the social purpose of geology beyond material and financial goals to the ultimate ends of sustainability through delivering long-term wellbeing for all.
- Iain Stewart
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Article |
Drought resistance enhanced by tree species diversity in global forests
Tree species diversity promotes drought resistance in nearly half of global forests, according to a global analysis of the relationship between species richness and drought-induced changes in forest productivity.
- Dan Liu
- , Tao Wang
- & Shilong Piao
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Perspective |
High Mountain Asia hydropower systems threatened by climate-driven landscape instability
Climate change is exacerbating geohazards in High Mountain Asia that pose a growing risk to hydropower and water infrastructure across the region.
- Dongfeng Li
- , Xixi Lu
- & Tobias Bolch
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Editorial |
Catching carbon
Meeting climate targets will require considerable carbon dioxide removal in addition to emission cuts. To achieve this sustainably, a range of methods are needed to avoid adverse effects and match co-benefits with local needs.
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Article |
Risks to carbon storage from land-use change revealed by peat thickness maps of Peru
Changes in land use threaten the stability of carbon in Peru’s peatlands, which store almost as much carbon as the entirety of the above-ground Peruvian carbon stock but in 5% of the land area, according to maps of the extent and depth of peat.
- Adam Hastie
- , Eurídice N. Honorio Coronado
- & Ian T. Lawson
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Correspondence |
Amazonian forest degradation must be incorporated into the COP26 agenda
- Celso H. L. Silva Junior
- , Nathália S. Carvalho
- & Luiz E. O. C. Aragão
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Review Article |
Past abrupt changes, tipping points and cascading impacts in the Earth system
A synthesis of intervals of rapid climatic change evident in the geological record reveals some of the Earth system processes and tipping points that could lead to similar events in the future.
- Victor Brovkin
- , Edward Brook
- & Zicheng Yu
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Article |
Drivers of PM2.5 air pollution deaths in China 2002–2017
Emission controls avoided some 870,000 deaths in China between 2002 and 2017 but further air quality improvements need energy-climate policies and changed economic structure, according to index decomposition analysis and chemical transport models.
- Guannan Geng
- , Yixuan Zheng
- & Steven J. Davis
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Correspondence |
Disrupt and demystify the unwritten rules of graduate school
- Jennifer Pensky
- , Christina Richardson
- & Margaret Zimmer
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Editorial |
Valuing wetlands
Wetlands provide a wealth of societal and climatic benefits. Balanced conservation strategies are needed to ensure their protection in the twenty-first century and beyond.
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Article |
Increased carbon footprint of materials production driven by rise in investments
Investment in capital formation between 1995 and 2015 has driven a 120% increase in the greenhouse gas emissions from material production, according to a multiregional input–output model of the global economy.
- Edgar G. Hertwich
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Comment |
Arctic fires re-emerging
Underground smouldering fires resurfaced early in 2020, contributing to the unprecedented wildfires that tore through the Arctic this spring and summer. An international effort is needed to manage a changing fire regime in the vulnerable Arctic.
- Jessica L. McCarty
- , Thomas E. L. Smith
- & Merritt R. Turetsky
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Comment |
Rethinking groundwater age
It is commonly thought that old groundwater cannot be pumped sustainably, and that recently recharged groundwater is inherently sustainable. We argue that both old and young groundwaters can be used in physically sustainable or unsustainable ways.
- Grant Ferguson
- , Mark O. Cuthbert
- & Jennifer C. McIntosh
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Perspective |
A shift in sulfur-cycle manipulation from atmospheric emissions to agricultural additions
Deliberate application of sulfur onto croplands as fertilizer and pesticide probably causes environmental damage similar to historical acid rain events, according to a literature review and four case studies from the United States.
- Eve-Lyn S. Hinckley
- , John T. Crawford
- & Charles T. Driscoll
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Article |
Tropical forest loss enhanced by large-scale land acquisitions
Tropical deforestation rates are linked to large-scale land investments, according to georeferenced land deal records and remote sensing of forest loss over the past two decades.
- Kyle Frankel Davis
- , Heejin Irene Koo
- & Mokganedi Tatlhego
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Editorial |
Mining’s climate accountability
Mineral extraction will play an important role in climate change mitigation and green technologies. But ensuring that the net effect of mining is beneficial requires careful monitoring of greenhouse gas emissions and environmental impacts.
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Comment |
Govern CO2 removal from the ground up
Scientists and policymakers must acknowledge that carbon dioxide removal can be small in scale and still be relevant for climate policy, that it will primarily emerge ‘bottom up’, and that different methods have different governance needs.
- Rob Bellamy
- & Oliver Geden
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Perspective |
Challenges for the recovery of the ozone layer
Recovery of the stratospheric ozone layer above Antarctica has not been straightforward, as a result of human activities and climate change. The recovery process might be delayed by up to decades if further mitigation actions are not taken.
- Xuekun Fang
- , John A. Pyle
- & Ronald G. Prinn
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News & Views |
China’s nitrogen management
Nitrogen deposition in China has stabilized over the past decade, thanks to efficient regulation of fertilizer use, suggests an analysis of wet and dry deposition.
- Maria Kanakidou
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Article |
Rapid increase in ozone-depleting chloroform emissions from China
Atmospheric levels of chloroform increased after 2010, as a result of emissions in eastern China, according to analyses of measurements and inverse modelling.
- Xuekun Fang
- , Sunyoung Park
- & Ronald G. Prinn
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Review Article |
Anthropogenic stresses on the world’s big rivers
Stressors such as large-scale damming, hydrological change, pollution, the introduction of non-native species and sediment mining are challenging the integrity and future of large rivers, according to a synthesis of the literature on the 32 biggest rivers.
- Jim Best
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Article |
A long-term decrease in the persistence of soil carbon caused by ancient Maya land use
Deforestation by the ancient Maya led to a destabilization of organic carbon preserved in the underlying soils and reduced the magnitude of the soil carbon sink in this region.
- Peter M. J. Douglas
- , Mark Pagani
- & Kevin Johnston
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Editorial |
Waste not, want not
Earth’s resources may not be running out, but the planet’s capacity to cope with the resulting waste products is limited. Resource geology can no longer be the preserve of the economic, mining or petroleum geologist; sustainably providing for the world’s population requires a broader skillset.
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Article |
Structural decline in China’s CO2 emissions through transitions in industry and energy systems
The decline in China’s CO2 emissions in the past few years is largely due to changes in industrial structure and a decline in the share of coal for energy production, according to a quantitative analysis of the drivers of CO2 emissions.
- Dabo Guan
- , Jing Meng
- & Steven J. Davis
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Article |
Highland cropland expansion and forest loss in Southeast Asia in the twenty-first century
Cultivated areas have expanded at the expense of forests, including primary and protected forests, in Southeast Asian highlands, according to an analysis of satellite imagery of the region.
- Zhenzhong Zeng
- , Lyndon Estes
- & Eric F. Wood
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News & Views |
Countdown to 1.5 °C warming
If emissions continue at the present-day rate, about 22 years are left until global mean warming reaches the 1.5 °C Paris Agreement target, suggests a new metric based on the observed level and rate of anthropogenic warming.
- Katarzyna B. Tokarska
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Comment |
Beyond carbon budgets
The remaining carbon budget consistent with limiting warming to 1.5 °C allows 20 more years of current emissions according to one study, but is already exhausted according to another. Both are defensible. We need to move on from a unique carbon budget, and face the nuances.
- Glen P. Peters
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Comment |
Politically informed advice for climate action
Upward estimates for carbon budgets are unlikely to lead to action-focused climate policy. Climate researchers need to understand processes and incentives in policymaking and politics to communicate effectively.
- Oliver Geden
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Review Article |
Environmental and social footprints of international trade
Indicators of environmental and social footprints of international trade must inform assessments of progress towards the UN Sustainable Development Goals, suggests a synthesis of studies on the geospatial separation of consumption and production.
- Thomas Wiedmann
- & Manfred Lenzen
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News & Views |
Agroforestry in the Sahel
West African farmers adjust tree cover to realize the co-benefits of agroforestry, according to analyses of remote sensing data.
- Niall P. Hanan
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Article |
Reduction of tree cover in West African woodlands and promotion in semi-arid farmlands
Farmland management promotes tree cover around villages in the semi-arid Sahel of West Africa, according to analyses of satellite imagery. This implies that a higher population density does not always lead to reduced tree cover.
- Martin Brandt
- , Kjeld Rasmussen
- & Rasmus Fensholt
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Article |
High sensitivity of metal footprint to national GDP in part explained by capital formation
A country’s metal footprint increases by 2% for every 1% increase in gross capital formation, according to a metal footprint quantification and panel analysis of 43 economies during 1995–2013.
- Xinzhu Zheng
- , Ranran Wang
- & Edgar G. Hertwich
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Comment |
Define limits for temperature overshoot targets
Temperature overshoot scenarios that make the 1.5 °C climate target feasible could turn into sources of political flexibility. Climate scientists must provide clear constraints on overshoot magnitude, duration and timing, to ensure accountability.
- Oliver Geden
- & Andreas Löschel
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Article |
Increased food production and reduced water use through optimized crop distribution
The current distribution of crops around the world neither attains maximum production nor minimum water use, according to a crop water model and yield data. An optimized crop distribution could feed an additional 825 million people and substantially reduce water use.
- Kyle Frankel Davis
- , Maria Cristina Rulli
- & Paolo D’Odorico
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Commentary |
Quality matters for water scarcity
Quality requirements for water differ by intended use. Sustainable management of water resources for different uses will not only need to account for demand in water quantity, but also for water temperature and salinity, nutrient levels and other pollutants.
- Michelle T.H. van Vliet
- , Martina Flörke
- & Yoshihide Wada
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Perspective |
Enhancing protection for vulnerable waters
Enhanced protection is needed for freshwater bodies in the United States — in particular impermanent streams and wetlands outside floodplains — according to an assessment of their value and vulnerability.
- Irena F. Creed
- , Charles R. Lane
- & Lora Smith
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Perspective |
National baselines for the Sustainable Development Goals assessed in the SDG Index and Dashboards
The Sustainable Development Goals map out a broad spectrum of objectives. Analytical tools in form of the Index and Dashboards provide a starting point to set national baselines, and allow comparison of the SDGs with other indices of well-being.
- Guido Schmidt-Traub
- , Christian Kroll
- & Jeffrey D. Sachs
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Editorial |
For people and planet
The emerging field of geohealth links human well-being and ecosystem health. A deeper understanding of these linkages can help society mitigate the health costs of economic growth before they become crises.
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Article |
Decline in Chinese lake phosphorus concentration accompanied by shift in sources since 2006
Many lakes in China are subject to eutrophication. Water quality analyses on 862 Chinese lakes reveal that better sanitation has reduced phosphorus inputs in the most populated areas, but aquaculture and livestock offset improvements elsewhere.
- Yindong Tong
- , Wei Zhang
- & Yan Lin
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Correspondence |
Save northern high-latitude catchments
- Hjalmar Laudon
- , Christopher Spence
- & Doerthe Tetzlaff
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Editorial |
Cleaner urban air tomorrow?
Air pollution in large cities remains a persistent public health problem. Adapting air quality forecasts for use by decision makers could help mitigate severe pollution events.
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News & Views |
Climate-induced pumping
Groundwater resources are directly affected by climate variability via precipitation, evapotranspiration and recharge. Analyses of US and India trends reveal that climate-induced pumping indirectly influences groundwater depletion as well.
- Jason J. Gurdak
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Article |
Depletion and response of deep groundwater to climate-induced pumping variability
Drought affects deep groundwater through changes in natural recharge with a multi-year time lag. Rapid changes in US groundwater storage in response to climate variability reflect the human response to drought through groundwater pumping.
- Tess A. Russo
- & Upmanu Lall
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Editorial |
A step up for geoengineering
The clock is ticking for climate change mitigation. Geoengineering is gaining ground as an option, but it needs to be examined at a large scale to determine its effectiveness and associated risks.