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
Bruce E Logan
Microbial fuel cells
microbial electrolysis cells
thermal batteries
desalination
water electrolyzers
Metrics
H-Index
i10 Index
Citation
168
541
120,794
Elizabeth Boyer
hydrological processes
freshwater
environmental science
science-technology-society
Metrics
H-Index
i10 Index
Citation
55
89
26,237
Karl Zimmerer
Agriculture and Land Use
Agrobiodiversity and Food
Sustainability and Conservation
Social Justice
Climate Change and Water
Metrics
H-Index
i10 Index
Citation
55
106
11,008
Yuefeng Xie
Water quality and analysis
disinfection and disinfection byproduct control
emerging contaminants
physical chemical treatment
Metrics
H-Index
i10 Index
Citation
46
107
5,556
Mort Webster
Stochastic Optimization
Electric Power Systems
Climate Change
Uncertainty
Metrics
H-Index
i10 Index
Citation
35
52
4,834
Rachel Brennan
bioremediation
ecological wastewater treatment
duckweed
nutrient recovery
biofuel
Metrics
H-Index
i10 Index
Citation
24
33
1,750
Manzhu Yu
GIScience
Spatiotemporal Analytics
Environmental Science
Computational Science
Natural Disasters
Metrics
H-Index
i10 Index
Citation
20
31
2,220
Bihang Fan (范 碧航)
Natural Disaster
Climate Change
Disaster Risk Management
Water Resource Management
Metrics
H-Index
i10 Index
Citation
19
24
1,325
Meng Wang
Resource recovery
Biological wastewater treatment
Anaerobic digestion
Environmental
Metrics
H-Index
i10 Index
Citation
18
20
1,768
Mathew Kurian
Water-Energy-Food Nexus
Place-based Observatories
Sustainable Development Goals
Metrics
H-Index
i10 Index
Citation
18
30
1,532
Caitlin Spence
Water resources engineering
flood risk management
climate change
ecological impact analysis
Metrics
H-Index
i10 Index
Citation
5
5
659
Rankings
Ranking Based On Selection: 1
Bruce E Logan
Metrics
H-Index
i10 Index
Citation Counts
168
541
120,794
Microbial fuel cells
microbial electrolysis cells
thermal batteries
desalination
water electrolyzers
Rankings
Ranking Based On Selection: 2
Duanping Liao
Metrics
H-Index
i10 Index
Citation Counts
79
156
25,333
Rankings
Ranking Based On Selection: 3
Elizabeth Boyer
Metrics
H-Index
i10 Index
Citation Counts
55
89
26,237
hydrological processes
freshwater
environmental science
science-technology-society
Rankings
Ranking Based On Selection: 4
Karl Zimmerer
Metrics
H-Index
i10 Index
Citation Counts
55
106
11,008
Agriculture and Land Use
Agrobiodiversity and Food
Sustainability and Conservation
Social Justice
Climate Change and Water
Rankings
Ranking Based On Selection: 5
Yuefeng Xie
Metrics
H-Index
i10 Index
Citation Counts
46
107
5,556
Water quality and analysis
disinfection and disinfection byproduct control
emerging contaminants
physical chemical treatment
Rankings
Ranking Based On Selection: 6
William D Burgos
Metrics
H-Index
i10 Index
Citation Counts
46
85
6,063
biogeochemistry
acid mine drainage
soil and groundwater remediation
Rankings
Ranking Based On Selection: 7
Christopher Duffy
Metrics
H-Index
i10 Index
Citation Counts
44
116
7,132
Rankings
Ranking Based On Selection: 8
Thomas Lauvaux
Metrics
H-Index
i10 Index
Citation Counts
40
94
6,205
Greenhouse Gas
Climate Change
Data Assimilation
Atmospheric modeling
Rankings
Ranking Based On Selection: 9
Mort Webster
Metrics
H-Index
i10 Index
Citation Counts
35
52
4,834
Stochastic Optimization
Electric Power Systems
Climate Change
Uncertainty
Rankings
Ranking Based On Selection: 10
Anthony Buda
Metrics
H-Index
i10 Index
Citation Counts
31
58
5,182
Rankings
Ranking Based On Selection: 11
Shirley Clark
Metrics
H-Index
i10 Index
Citation Counts
26
54
3,173
Rankings
Ranking Based On Selection: 12
Wei Peng
Metrics
H-Index
i10 Index
Citation Counts
24
35
2,656
Rankings
Ranking Based On Selection: 13
Rachel Brennan
Metrics
H-Index
i10 Index
Citation Counts
24
33
1,750
bioremediation
ecological wastewater treatment
duckweed
nutrient recovery
biofuel
Rankings
Ranking Based On Selection: 14
Manzhu Yu
Metrics
H-Index
i10 Index
Citation Counts
20
31
2,220
GIScience
Spatiotemporal Analytics
Environmental Science
Computational Science
Natural Disasters
Rankings
Ranking Based On Selection: 15
Bihang Fan (范 碧航)
Metrics
H-Index
i10 Index
Citation Counts
19
24
1,325
Natural Disaster
Climate Change
Disaster Risk Management
Water Resource Management
Rankings
Ranking Based On Selection: 16
Meng Wang
Metrics
H-Index
i10 Index
Citation Counts
18
20
1,768
Resource recovery
Biological wastewater treatment
Anaerobic digestion
Environmental
Rankings
Ranking Based On Selection: 17
Mathew Kurian
Metrics
H-Index
i10 Index
Citation Counts
18
30
1,532
Water-Energy-Food Nexus
Place-based Observatories
Sustainable Development Goals
Rankings
Ranking Based On Selection: 18
Mark Boudreau
Metrics
H-Index
i10 Index
Citation Counts
15
17
1,004
Rankings
Ranking Based On Selection: 19
Caitlin Spence
Metrics
H-Index
i10 Index
Citation Counts
5
5
659
Water resources engineering
flood risk management
climate change
ecological impact analysis
Rankings
Ranking Based On Selection: 20
Joel R Landry
Metrics
H-Index
i10 Index
Citation Counts
5
4
114
Environmental economics
Energy economics
Public finance
Political economy
Rankings
Ranking Based On Selection: 21
Benjamin Castillo
Metrics
H-Index
i10 Index
Citation Counts
4
4
81
Soil Microbial Ecology
Soil Chemistry
Environmental Engineering
Rankings
Ranking Based On Selection: 22
Yingchi Cheng
Metrics
H-Index
i10 Index
Citation Counts
3
2
34
electrochemistry
environmental engineering
redox flow battery
desalination
Rankings
Ranking Based On Selection: 23
Xinyuan Huang
Metrics
H-Index
i10 Index
Citation Counts
2
2
79
Rankings
Ranking Based On Selection: 24
Emma Chiaroni
Metrics
H-Index
i10 Index
Citation Counts
1
0
4
Environmental Sociology
Marine Governance
Environmental Justice