Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,864 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection :1
Prashant Kumar
Air quality monitoring/modelling
Ultrafine/nanoparticles/aerosols
Exposure assessment
Emission modelling
Indoor air quality
Metrics
H-Index
i10 Index
Citation
79
337
26,186
* Rankings
Ranking Based On Selection :2
David Uzzell
sustainable consumption and production
Heritage and Identity
Metrics
H-Index
i10 Index
Citation
52
133
14,958
Angela Druckman
Sustainable lifestyles
Systems analysis
Rebound effect
Industrial ecology
Post-growth economies
Metrics
H-Index
i10 Index
Citation
35
62
6,822
Devendra Saroj
Water-Energy-Food-Environment nexus
Urban Water Management
Sanitation
Water Reuse
Metrics
H-Index
i10 Index
Citation
29
54
3,059
Sabeha Kesraoui Ouki
Advanced water/wastewater treatmen
resource efficiency & recovery
circular economy
sustainable development
Metrics
H-Index
i10 Index
Citation
29
50
5,095
Melissa Marselle
environmental psychology
restorative natural environments
nature and health
Metrics
H-Index
i10 Index
Citation
26
37
3,314
* Rankings
Ranking Based On Selection :10
Eleanor Ratcliffe
environmental psychology
consumer psychology
user experience
restorative environments
place attachment
Metrics
H-Index
i10 Index
Citation
15
19
1,646
* Rankings
Ranking Based On Selection :11
Ben Shaw
Environmental Policy
Sustainable Development
Research and Policy Evaluation
Children's Independent Mobility
Cities
Metrics
H-Index
i10 Index
Citation
12
14
1,753
Emma White
Environmental Psychology
Natural Environments
Biodiversity
Gardens
Green Roofs
Metrics
H-Index
i10 Index
Citation
8
8
571
Pn Egbuikwem
Environmental Engineering
Agricultural and Biosystems Engineering
Metrics
H-Index
i10 Index
Citation
7
7
206
Oluwaseun Nubi
Waste Management
Environmental Management
Energy Systems and Sustainability Assessment
Metrics
H-Index
i10 Index
Citation
4
3
71
Rankings
Ranking Based On Selection: 1
Prashant Kumar
Metrics
H-Index
i10 Index
Citation Counts
79
337
26,186
Air quality monitoring/modelling
Ultrafine/nanoparticles/aerosols
Exposure assessment
Emission modelling
Indoor air quality
Rankings
Ranking Based On Selection: 2
David Uzzell
Metrics
H-Index
i10 Index
Citation Counts
52
133
14,958
sustainable consumption and production
Heritage and Identity
Rankings
Ranking Based On Selection: 3
Angela Druckman
Metrics
H-Index
i10 Index
Citation Counts
35
62
6,822
Sustainable lifestyles
Systems analysis
Rebound effect
Industrial ecology
Post-growth economies
Rankings
Ranking Based On Selection: 4
Devendra Saroj
Metrics
H-Index
i10 Index
Citation Counts
29
54
3,059
Water-Energy-Food-Environment nexus
Urban Water Management
Sanitation
Water Reuse
Rankings
Ranking Based On Selection: 5
Sabeha Kesraoui Ouki
Metrics
H-Index
i10 Index
Citation Counts
29
50
5,095
Advanced water/wastewater treatmen
resource efficiency & recovery
circular economy
sustainable development
Rankings
Ranking Based On Selection: 6
Melissa Marselle
Metrics
H-Index
i10 Index
Citation Counts
26
37
3,314
environmental psychology
restorative natural environments
nature and health
Rankings
Ranking Based On Selection: 8
Matteo Carpentieri
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,323
Rankings
Ranking Based On Selection: 9
Thomas Roberts
Metrics
H-Index
i10 Index
Citation Counts
16
21
982
Rankings
Ranking Based On Selection: 10
Eleanor Ratcliffe
Metrics
H-Index
i10 Index
Citation Counts
15
19
1,646
environmental psychology
consumer psychology
user experience
restorative environments
place attachment
Rankings
Ranking Based On Selection: 11
Ben Shaw
Metrics
H-Index
i10 Index
Citation Counts
12
14
1,753
Environmental Policy
Sustainable Development
Research and Policy Evaluation
Children's Independent Mobility
Cities
Rankings
Ranking Based On Selection: 12
Abhijith Kv
Metrics
H-Index
i10 Index
Citation Counts
11
11
2,233
Rankings
Ranking Based On Selection: 13
Rana Alaa
Metrics
H-Index
i10 Index
Citation Counts
9
9
340
Rankings
Ranking Based On Selection: 14
Emma White
Metrics
H-Index
i10 Index
Citation Counts
8
8
571
Environmental Psychology
Natural Environments
Biodiversity
Gardens
Green Roofs
Rankings
Ranking Based On Selection: 15
Pn Egbuikwem
Metrics
H-Index
i10 Index
Citation Counts
7
7
206
Environmental Engineering
Agricultural and Biosystems Engineering
Rankings
Ranking Based On Selection: 16
Oluwaseun Nubi
Metrics
H-Index
i10 Index
Citation Counts
4
3
71
Waste Management
Environmental Management
Energy Systems and Sustainability Assessment