Featured
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Article |
Control of particulate nitrate air pollution in China
Reduction of ammonia emissions may be effective in reducing the nitrate component of fine particulate matter air pollution across the North China Plain, according to the simulation of nitrate trends using the GEOS-Chem atmospheric chemistry model.
- Shixian Zhai
- , Daniel J. Jacob
- & Hong Liao
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News & Views |
A world view of pesticides
Pesticide pollution is a widespread issue. A global risk assessment of 92 active pesticide ingredients suggests 2.5 billion hectares of agricultural land are at risk of pollution by more than one active ingredient.
- Rupert Lloyd Hough
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Article |
Risk of pesticide pollution at the global scale
Pesticide pollution is a risk for two-thirds of agriculture land. A third of high-risk areas are in high-biodiversity regions and a fifth are in low- and lower-middle-income areas, according to environmental modelling combined with pesticide application data.
- Fiona H. M. Tang
- , Manfred Lenzen
- & Federico Maggi
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Article |
Enhanced aerosol particle growth sustained by high continental chlorine emission in India
Half of the reduced visibility due to haze formation in cities in India is attributed to local emission of gas-phase hydrochloric acid from waste-burning and industry, according to measurements of particulate matter and thermodynamic modelling.
- Sachin S. Gunthe
- , Pengfei Liu
- & Hugh Coe
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Article |
A two-pollutant strategy for improving ozone and particulate air quality in China
Observations confirm that cleaning up fine particulate matter in the North China Plain has exacerbated ozone pollution, suggesting that both NOx and VOC emissions need to be reduced to improve air quality.
- Ke Li
- , Daniel J. Jacob
- & Shixian Zhai
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Editorial |
Pervasive plastic
Human manipulation of hydrocarbons — as fuel and raw materials for modern society — has changed our world and the indelible imprint we will leave in the rock record. Plastics alone have permeated our lives and every corner of our planet.
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Article |
Contribution of wetlands to nitrate removal at the watershed scale
Depending on their connectivity to the river network, wetlands can be much more efficient at removing nitrate in a watershed than common nitrogen mitigation strategies according to an analysis of the Minnesota River basin.
- Amy T. Hansen
- , Christine L. Dolph
- & Jacques C. Finlay
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News & Views |
Tracking pollutant emissions
Progress in the post-combustion treatment of diesel vehicle exhaust has led to shifting proportions of the constituents of nitrogen oxides. Observations from 61 European cities suggest that the outlook on attaining NO2 standards is more optimistic than expected.
- Drew R. Gentner
- & Fulizi Xiong
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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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Letter |
Space-based detection of missing sulfur dioxide sources of global air pollution
Sulfur dioxide is a key air contaminant. A satellite-based emissions inventory reveals a number of hitherto unknown sources, with a cluster around the Persian Gulf, and identifies large discrepancies with conventional inventories in some regions.
- Chris A. McLinden
- , Vitali Fioletov
- & Joanna Joiner
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Letter |
Long-term persistence of oil from the Exxon Valdez spill in two-layer beaches
Oil spilt from the tanker Exxon Valdez more than 20 years ago still persists in the gravel beaches of Prince William Sound, Alaska. Field data and numerical modelling indicate that some of the oil was trapped in the anoxic environment of the lower layers of the beaches when the water table was low.
- Hailong Li
- & Michel C. Boufadel
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Editorial |
Digging deeper
Arsenic contamination of groundwater affects millions of people in southern Asia. Water from deep wells could help, but only if used in moderation.
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Commentary |
The socio-economics of arsenic removal
Nearly an eighth of the population in Bangladesh relies on arsenic-contaminated drinking water. Arsenic-removal filters could help to reduce exposure, but their price is high for the poor and their maintenance is cumbersome.
- Richard Bart Johnston
- , Suzanne Hanchett
- & Mohidul Hoque Khan