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" (873,899 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: 2
Sotiris Vardoulakis
environmental health
public health
air pollution
climate change
transport
Metrics
H-Index
i10 Index
Citation
62
136
18,851
* Rankings
Ranking Based On Selection: 4
Philip Gibbons
environmental impact assessment
wildfire
fire
bushfire
conservation biology
Metrics
H-Index
i10 Index
Citation
58
109
12,043
* Rankings
Ranking Based On Selection: 5
Matt Colloff
Adaptation to climate change
ecosystem function
systematics and taxonomy
people and landscapes
Metrics
H-Index
i10 Index
Citation
54
135
9,962
* Rankings
Ranking Based On Selection: 6
Dovers S
Environmental policy
emergency management
climate adaptation
Metrics
H-Index
i10 Index
Citation
51
128
11,264
* Rankings
Ranking Based On Selection: 7
Jamie Pittock
Environmental policy
agriculture
biodiversity conservation
energy
water
Metrics
H-Index
i10 Index
Citation
45
124
7,921
* Rankings
Ranking Based On Selection: 10
Valerie A Brown
collective thinking
transdisciplinarity
public health
environmental management
Metrics
H-Index
i10 Index
Citation
30
64
5,638
* Rankings
Ranking Based On Selection: 13
Jennie Mallela
Environmental Science
Coral Reefs
Environmental Disturbance
Resource Manangement
Habitat Resiliance
Metrics
H-Index
i10 Index
Citation
21
25
2,050
* Rankings
Ranking Based On Selection: 15
Serena Hamilton Chen
environmental modelling
integrated assessment
water resources management
Metrics
H-Index
i10 Index
Citation
19
23
5,842
* Rankings
Ranking Based On Selection: 16
Michael Smith
Sustainable Development
green growth
sustainable design
climate change mitigation
climate change adaptation
Metrics
H-Index
i10 Index
Citation
19
25
3,173
* Rankings
Ranking Based On Selection: 17
Anna Herring
CO2 sequestration
CCUS
flow in porous media
multiphase flow
environmental engineering
Metrics
H-Index
i10 Index
Citation
18
24
1,445
* Rankings
Ranking Based On Selection: 18
David Summers
Environmental modelling
remote sensing
landscape modelling
conservation biology
Metrics
H-Index
i10 Index
Citation
17
21
1,502
* Rankings
Ranking Based On Selection: 19
Rachel Friedman
community-based natural resources management
food systems
sustainable development
climate change
Metrics
H-Index
i10 Index
Citation
16
18
1,459
Baihua Fu
Environmental modelling
water resource management
uncertainty
Metrics
H-Index
i10 Index
Citation
15
21
1,541
Yayan Indriatmoko
Rural Development and Agrarian Change
Conservation and Development
Environmental Governance
Metrics
H-Index
i10 Index
Citation
14
17
643
Leo Dobes
real options
cost-benefit analysis
adaptation to climate change
Metrics
H-Index
i10 Index
Citation
12
16
551
Liz Dovey anu edu au
Climate change vulnerability
impacts & adaptation
biodiversity conservation
Pacific
Australia
Metrics
H-Index
i10 Index
Citation
6
6
540
Rankings
Ranking Based On Selection: 1
Stuart Mark Howden
Metrics
H-Index
i10 Index
Citation Counts
82
235
65,030
Rankings
Ranking Based On Selection: 2
Sotiris Vardoulakis
Metrics
H-Index
i10 Index
Citation Counts
62
136
18,851
environmental health
public health
air pollution
climate change
transport
Rankings
Ranking Based On Selection: 3
Ian R Noble
Metrics
H-Index
i10 Index
Citation Counts
61
113
49,354
Rankings
Ranking Based On Selection: 4
Philip Gibbons
Metrics
H-Index
i10 Index
Citation Counts
58
109
12,043
environmental impact assessment
wildfire
fire
bushfire
conservation biology
Rankings
Ranking Based On Selection: 5
Matt Colloff
Metrics
H-Index
i10 Index
Citation Counts
54
135
9,962
Adaptation to climate change
ecosystem function
systematics and taxonomy
people and landscapes
Rankings
Ranking Based On Selection: 6
Dovers S
Metrics
H-Index
i10 Index
Citation Counts
51
128
11,264
Environmental policy
emergency management
climate adaptation
Rankings
Ranking Based On Selection: 7
Jamie Pittock
Metrics
H-Index
i10 Index
Citation Counts
45
124
7,921
Environmental policy
agriculture
biodiversity conservation
energy
water
Rankings
Ranking Based On Selection: 8
Ian Cowan
Metrics
H-Index
i10 Index
Citation Counts
40
51
11,235
Rankings
Ranking Based On Selection: 9
Joelle Gergis
Metrics
H-Index
i10 Index
Citation Counts
33
52
6,724
Rankings
Ranking Based On Selection: 10
Valerie A Brown
Metrics
H-Index
i10 Index
Citation Counts
30
64
5,638
collective thinking
transdisciplinarity
public health
environmental management
Rankings
Ranking Based On Selection: 11
Libby Robin
Metrics
H-Index
i10 Index
Citation Counts
28
62
7,027
Rankings
Ranking Based On Selection: 12
Ian Davies
Metrics
H-Index
i10 Index
Citation Counts
28
34
3,072
Rankings
Ranking Based On Selection: 13
Jennie Mallela
Metrics
H-Index
i10 Index
Citation Counts
21
25
2,050
Environmental Science
Coral Reefs
Environmental Disturbance
Resource Manangement
Habitat Resiliance
Rankings
Ranking Based On Selection: 14
Pengxiang Hu
Metrics
H-Index
i10 Index
Citation Counts
20
26
1,172
Rankings
Ranking Based On Selection: 15
Serena Hamilton Chen
Metrics
H-Index
i10 Index
Citation Counts
19
23
5,842
environmental modelling
integrated assessment
water resources management
Rankings
Ranking Based On Selection: 16
Michael Smith
Metrics
H-Index
i10 Index
Citation Counts
19
25
3,173
Sustainable Development
green growth
sustainable design
climate change mitigation
climate change adaptation
Rankings
Ranking Based On Selection: 17
Anna Herring
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,445
CO2 sequestration
CCUS
flow in porous media
multiphase flow
environmental engineering
Rankings
Ranking Based On Selection: 18
David Summers
Metrics
H-Index
i10 Index
Citation Counts
17
21
1,502
Environmental modelling
remote sensing
landscape modelling
conservation biology
Rankings
Ranking Based On Selection: 19
Rachel Friedman
Metrics
H-Index
i10 Index
Citation Counts
16
18
1,459
community-based natural resources management
food systems
sustainable development
climate change
Rankings
Ranking Based On Selection: 20
Baihua Fu
Metrics
H-Index
i10 Index
Citation Counts
15
21
1,541
Environmental modelling
water resource management
uncertainty
Rankings
Ranking Based On Selection: 21
Tapas K Biswas
Metrics
H-Index
i10 Index
Citation Counts
15
23
813
Rankings
Ranking Based On Selection: 22
Yayan Indriatmoko
Metrics
H-Index
i10 Index
Citation Counts
14
17
643
Rural Development and Agrarian Change
Conservation and Development
Environmental Governance
Rankings
Ranking Based On Selection: 23
Leo Dobes
Metrics
H-Index
i10 Index
Citation Counts
12
16
551
real options
cost-benefit analysis
adaptation to climate change
Rankings
Ranking Based On Selection: 24
Glenn Althor
Metrics
H-Index
i10 Index
Citation Counts
11
12
986
Rankings
Ranking Based On Selection: 25
Su Wild River
Metrics
H-Index
i10 Index
Citation Counts
9
9
362
Rankings
Ranking Based On Selection: 26
Liz Dovey anu edu au
Metrics
H-Index
i10 Index
Citation Counts
6
6
540
Climate change vulnerability
impacts & adaptation
biodiversity conservation
Pacific
Australia
Rankings
Ranking Based On Selection: 27
James O Latimer
Metrics
H-Index
i10 Index
Citation Counts
2
2
44