Trending Science Topics in USA — September 2026
The 100 most-viewed science topics on Wikipedia, September 2026 (English-language edition). Ranked by real-world attention. Top: tabby cat. Data as of 26 October 2026.
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- Wikipedia pageviews — complete hourly data from Wikimedia (CC0)
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- September 2026 · Data as of 26 October 2026
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- 100 science topics — drawn from 6,992,709 articles Wikipedia recorded views for in this window
This counts a Wikipedia language edition, not a country's residents — Measured from the English-language Wikipedia edition — readers worldwide, not residents of USA. Nothing here is capped or sampled: it is every view Wikipedia published for these articles in the window. Rows carrying a 📰 badge add news coverage from GDELT; entity names and types come from Wikidata. Looking for what one country read? That is what the world reads — a different, capped measurement.
Where this data comes from ›100
Ranked
1,964,202
Total Views (September 2026)
1
tabby cat
domestic cat with a distinctive coat marked by stripes, dots, lines, or other patterns
81,247
views
views
2
Gregorian calendar
internationally accepted civil calendar, first used in 1582
65,631
views
views
3
physics
study of matter and its motion, along with related concepts such as energy and force
60,084
views
views
4
human evolution
evolutionary process leading up to the appearance of anatomically modern humans
57,795
views
views
5
geography of the United States
overview of the geography of the United States of America
57,725
views
views
6
misanthropy
general dislike of humanity
51,211
views
views
7
demographics of India
Aspect of human geography in India
45,040
views
views
8
vibe coding
software development practice with AI assistance
44,837
views
views
9
feminism
group of movements that come about defining, and defending women liberation and gender equity
41,244
views
views
10
Julian calendar
calendar introduced by Julius Caesar in 45 BC
39,333
views
views
11
tricolour cat
coat pattern in domestic cats
36,839
views
views
12
demographics of Germany
demographics of country
36,059
views
views
13
Hellenistic period
period of Mediterranean history from 323 to 31 BC
31,011
views
views
14
Ayurveda
pseudoscientific alternative medicine originating from India
29,614
views
views
15
homeopathy
system of pseudoscientific alternative medicine based on the doctrine of "like cures like"
28,653
views
views
16
tortoiseshell
two-color coat coloring found almost exclusively in female cats
28,243
views
views
17
Critical Role
American TTRPG web series
27,071
views
views
18
demographics of Israel
national demographics
27,044
views
views
19
logic
study of correct reasoning
26,009
views
views
20
Apple Intelligence
artificial intelligence platform developed by Apple
24,925
views
views
21
Chinese calendar
lunisolar calendar
24,897
views
views
22
wheel of the year
annual cycle of seasonal festivals observed by many modern Pagans
24,783
views
views
23
timeline of human evolution
chronological outline of major events in the development of the human species
24,463
views
views
24
Islamic calendar
lunar calendar used by Muslims to determine religious observances
23,534
views
views
25
Jihadism
Belief in one's internal struggle against one's own evil inclinations
23,480
views
views
26
Socratic method
type of dialog or debate
23,406
views
views
27
Lebensraum
German "living space" ideas of settler colonialism (1890s–1940s)
23,297
views
views
28
dispensationalism
Christian theology
23,258
views
views
29
French Republican calendar
calendar
21,552
views
views
30
self-immolation of Aaron Bushnell
self-immolation of a 25-year-old U.S. serviceman
21,500
views
views
31
Kinsey scale
social distribution of sexual orientation
21,108
views
views
32
demographics of Ukraine
demographics of country
20,853
views
views
33
chronology of the universe
history and future of the universe according to Big Bang cosmology
20,711
views
views
34
semantics
study of meaning in language
19,552
views
views
35
BCG vaccine
vaccine primarily used against tuberculosis
19,404
views
views
36
Roman calendar
calendar
18,848
views
views
37
critical sociology
philosophy that sociological understanding's primarily use should be social reform
18,711
views
views
38
Alcoholics Anonymous
self-help organization
18,540
views
views
39
Today
American morning television program broadcast on NBC
17,445
views
views
40
natural language processing
field of computer science and linguistics
17,004
views
views
41
gradient descent
optimization algorithm
16,396
views
views
42
backpropagation
optimization algorithm for artificial neural networks
16,385
views
views
43
biotechnology
technologies directly involving biology; formerly or more narrowly the use of living systems and organisms to develop or make useful products
15,734
views
views
44
genetics
science of genes, heredity, and variation in living organisms
14,889
views
views
45
cosmology
scientific study of the origin, evolution, and eventual fate of the universe
14,535
views
views
46
Three Sisters
main agricultural crops of various Native American groups in North America
13,989
views
views
47
AlphaFold
software by DeepMind
13,880
views
views
48
de-extinction
process of creating an organism, which is either a member of, or resembles an extinct species, or breeding population of such organisms
13,874
views
views
49
astrophysics
science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena
13,780
views
views
50
biochemistry
study of chemical processes in living organisms
13,766
views
views
51
polio vaccine
vaccine to prevent poliomyelitis
13,758
views
views
52
entomology
scientific study of insects
13,714
views
views
53
Pauli exclusion principle
quantum mechanical principle that two identical fermions cannot occupy the same quantum state simultaneously
13,474
views
views
54
physiotherapy
is a medical specialty that aims to address the illnesses or injuries that limit a person's abilities to function in everyday lives
13,327
views
views
55
five-year plans of India
economic policies of India
13,174
views
views
56
etymology science
study of the history of words, their origins, and how their form and meaning have changed over time
12,938
views
views
57
Robin Hobb bibliography
12,873
views
views
58
Geography of India
Overview of the geography of India
12,839
views
views
59
sleep deprivation
condition of not having enough sleep
12,789
views
views
60
MMR vaccine
any of several combined vaccines against measles, mumps, and rubella
12,584
views
views
61
positron
subatomic particle with positive charge
12,547
views
views
62
PowerShell
cross-platform command-line interface and scripting language for system and network administration
12,518
views
views
63
rabies vaccine
group of vaccines against infection of humans and animals with the rabies virus
12,366
views
views
64
Altai Mountains
mountains in Russia, Kazakhstan, China, and Mongolia
12,096
views
views
65
Geography of Chile
Overview of the geography of Chile
12,004
views
views
66
syntax
inner structure of sentences and the linguistic field that studies it
11,806
views
views
67
engineered materials arrestor system
bed of engineered materials built at the end of a runway
11,691
views
views
68
geography of Taiwan
overview of the geography of Taiwan
11,600
views
views
69
control theory
branch of engineering and mathematics that deals with the behavior of dynamical systems with inputs, and how their behavior is modified by feedback
11,538
views
views
70
Synanon
Religious cult of the 1970s
11,190
views
views
71
hydroelectricity
electricity generated by hydropower
11,122
views
views
72
Strava
fitness tracking app for iOS and Android
11,100
views
views
73
rule of law
doctrine that advocates that every citizen, including those in government, is subject to the law
11,071
views
views
74
demographics of Iran
demographics of a country
11,026
views
views
75
Médecins Sans Frontières
international humanitarian medical non-governmental organisation
11,014
views
views
76
morphology
identification, analysis and description of the structure of a given language's morphemes and other linguistic units
10,875
views
views
77
COVID-19 vaccine
vaccine against SARS-CoV-2 coronavirus
10,865
views
views
78
pharmacy
science that studies the chemical, pharmacological and pharmaceutical properties of drugs
10,465
views
views
79
shape of the universe
subject of cosmology
10,355
views
views
80
Bantu expansion
name for a postulated millennia-long series of migrations of speakers of the original proto-Bantu language group
10,243
views
views
81
ornithology
study of birds
10,189
views
views
82
AlphaGo versus Lee Sedol
Go match between AlphaGo and Lee Sedol
10,187
views
views
83
Deep Blue versus Garry Kasparov
pair of chess matches between Deep Blue and Kasparov
10,165
views
views
84
palimpsest
manuscript page that's been used multiple times
10,070
views
views
85
history of Rome
history of city of Rome and Roman civilization
9,969
views
views
86
greenhouse effect
atmospheric heat retention
9,929
views
views
87
demographics of the Netherlands
demographics of country
9,891
views
views
88
Maya calendar
system of calendars used in pre-Columbian Mesoamerica
9,732
views
views
89
phonetics
branch of linguistics that comprises the study of the sounds of human speech
9,710
views
views
90
Western philosophy
philosophical tradition of Western civilization
9,559
views
views
91
chemical engineering
branch of science that applies physical sciences and life sciences together with applied mathematics and economics to produce, transform, transport, and properly use chemicals, materials and energy
9,513
views
views
92
sexology
scientific study of human sexuality
9,447
views
views
93
French orthography
orthography of the French language
9,362
views
views
94
Japanese calendar
calendar
9,317
views
views
95
population history of the Indigenous peoples of the Americas
9,311
views
views
96
hoodoo
tall, thin spire of rock that protrudes from the bottom of an arid drainage basin or badland
9,246
views
views
97
demographics of Finland
aspect of human geography in Finland
9,244
views
views
98
history of the Jews and Judaism in the Land of Israel
9,173
views
views
99
Nixon Shock
1971 decoupling of the US dollar from gold
9,053
views
views
100
RNA vaccine
vaccine that transfects synthetic RNA, reprogramming cells to make foreign protein that stimulates an adaptive immune response
8,984
views
views