Quality:

John Spengler - American health scholar; Akira Yamaguchi Professor of Environmental Health and Human Habitation at Harvard T.H. Chan School of Public Health. Article “John Spengler” in English Wikipedia has 18.3 points for quality (as of July 1, 2025).
The article contains 6 references and 4 sections.
Since the creation of article “John Spengler”, its content was written by 15 registered users of English Wikipedia and edited by 15 registered Wikipedia users in all languages.
The article is cited 6 times in English Wikipedia and cited 6 times in all languages.
The highest Authors Interest rank from 2001:
- Local (English): #92856 in April 2020
- Global: #364053 in April 2020
The highest popularity rank from 2008:
- Local (English): #2635387 in November 2022
- Global: #4747769 in November 2022
There is 1 language version for this article in the WikiRank database (of the considered 55 Wikipedia language editions).
The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).