Wikipedia at 25: What the data tells us
As of December 2025, there are over 66 million articles across all languages on Wikipedia. Around 7 million articles are in English.
Numbers, Facts and Trends Shaping Your World
Anna Lieb
Computational Social Science Assistant
Anna Lieb is a computational social science assistant at Pew Research Center.
Publications
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report
How Parents Use Online Communities
On Reddit’s largest parenting forum, around one-in-five posts mention kids’ tech use. Posts often express negative emotions, but comments are overwhelmingly supportive.
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short reads
Google users are less likely to click on links when an AI summary appears in the results
In a March 2025 analysis, Google users who encountered an AI summary were less likely to click on links to other websites than users who did not see one.
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report
What Web Browsing Data Tells Us About How AI Appears Online
One month of web browsing data shows most respondents visited a search page with an AI-generated summary, but visits to in-depth content about AI were much rarer.
