Summary
Pollution and contamination encompass the introduction of harmful substances or energy into air, water, soil and biota at concentrations that endanger human health, ecosystem resilience and the services they provide. Major categories include atmospheric pollutants (oxides of nitrogen and sulphur, particulate matter and volatile organic compounds), aquatic contaminants (nutrients, heavy metals, industrial effluents and emerging micro-pollutants), terrestrial pollutants (persistent organic chemicals, agrochemicals and landfill leachates) and noise or radiative disturbances. Once released, contaminants may be transformed by chemical reactions, microbial processes or photolysis, redistributed by advection and diffusion, or sequestered in sediments and soils before remobilisation under changing redox and pH regimes. The global scale of transport—from transboundary smog to ocean-borne plastics—and the capacity for biomagnification through food webs underline the urgency of integrated monitoring, risk assessment and remediation strategies. Advances in sensor technologies, isotope tracing and geospatial analysis now enable finer resolution of source apportionment, while engineered barriers, bioremediation and green infrastructure offer practical routes to pollutant abatement. Understanding the interplay between contaminant fate, ecosystem functions and human activity is essential to safeguard water and air quality, soil fertility and public health in a warming and urbanising world.
Research from Nature Portfolio
Recent studies have demonstrated the power of reciprocity-based solutions to reconstruct point-source releases in groundwater, yielding linear systems that recover source location, timing and mass flux from sparse concentration data. Work on deep crystalline aquifers using noble-gas residence time analysis has revealed that permeability at depths exceeding one kilometre remains orders of magnitude lower than previously assumed, limiting vertical contaminant exchange and challenging prevailing models of solute migration. Longitudinal analysis of a century-old river monitoring dataset employed principal component and cluster analyses alongside a composite water quality index to identify key drivers—such as untreated sewage and industrial discharge—and to optimise sampling networks by pinpointing under-monitored stretches most vulnerable to nutrient and metal overload.
Topic trend for the past 5 years
The graph below shows the article count in Nature Index journals for pollution and contamination.
* The ‘Current Index’ represents data for a 12-month rolling window, the current window is 1 May 2025 - 30 April 2026.
Technical terms
Contaminant plume: A body of polluted groundwater or air originating from a point or diffuse source and migrating under hydraulic or atmospheric flows.
Groundwater-vulnerability index: A composite metric that rates zones of an aquifer by susceptibility to contamination based on hydrogeological and land-use factors.
Water Quality Index (WQI): A dimensionless score that integrates multiple physicochemical measurements into a single value for assessing overall water quality status.
Multivariate statistical analysis: The application of techniques such as principal component and cluster analyses to reduce dimensionality and reveal patterns in complex environmental datasets.
Spectral remote sensing: The use of measured electromagnetic reflectance or backscatter across multiple wavelengths to infer properties of water and land surfaces, including pollutant concentrations.
Permeability: A measure of a material’s ability to transmit fluids, controlling the rate of contaminant transport through aquifers or soils.
Notable articles in pollution and contamination
- Photocatalytic low-temperature defluorination of PFASs. Nature (2024).
- Higher Aircraft Noise Exposure Is Linked to Worse Heart Structure and Function by Cardiovascular MRI. Journal of the American College of Cardiology (2025).
- Lithium-ion battery components are at the nexus of sustainable energy and environmental release of per- and polyfluoroalkyl substances. Nature Communications (2024).
- Removal efficiency of multiple poly- and perfluoroalkyl substances (PFASs) in drinking water using granular activated carbon (GAC) and anion exchange (AE) column tests. Water Research (2017).
About these summaries
This Nature Research Intelligence Topic summary is created with the cited references and a large language model. We take care to ground generated text with facts, and have systems in place to gain human feedback on the overall quality of the process in line with our AI principles. We strive to create accurate and useful summaries for people unfamiliar with the research topic and that supports this goal. These pages are a beta release and will be updated as we learn how best to help people gain value from a research topic summary.
Research
Position of Pollution and Contamination in Nature Index by Count
Leading institutions
| Institution | Count | Share |
|---|---|---|
| Chinese Academy of Sciences (CAS) | 157 | 49.75 |
| China Ministry of Ecology and Environment (MEE) | 107 | 27.81 |
| University of Chinese Academy of Sciences (UCAS) | 74 | 18.2 |
| China University of Geosciences (CUG) | 32 | 14.39 |
| Nankai University (NKU) | 23 | 13.88 |
| Tongji University | 49 | 12.79 |
| Peking University (PKU) | 37 | 10.95 |
| Sun Yat-sen University (SYSU) | 26 | 10.53 |
| China University of Geosciences, Beijing (CUGB) | 29 | 9.61 |
| Xiamen University (XMU) | 21 | 9.56 |
Collaboration
Top 5 leading collaborators in Pollution and Contamination
Collaborating institutions
Note: Hover over the bars to view details about each institution's Share.
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