Numbers, Facts and Trends Shaping Your World

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    2. Causes of religious change

    The religious composition of the global population is always in flux. For example, the share of Buddhists worldwide is shrinking because of their low average fertility rate, and Christians are declining in the U.S. and Western Europe as more people leave organized religion. Demographers attribute changes in the size of religious populations to three main […]

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    3. Religious demography of Indian states and territories

    As is the case in most countries, population density varies widely across India. The most populous state, Uttar Pradesh, recorded close to 200 million (20 crore) inhabitants in the 2011 census, while the southern archipelago of Lakshadweep had fewer than 100,000 (1,00,000 in India’s number system). Adherents of religious groups also are not evenly distributed […]

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    2. Confucianism, Taoism and Chinese folk religions

    Confucianism Named after the sage Confucius (b. 551 B.C.E.), Confucianism is one of the most important philosophical traditions in China. Although it’s widely considered a spiritual philosophy, some scholars classify it as a religion. Its beliefs center on a pervasive, invisible divine power – tian (天), usually translated as “heaven” – that controls humans’ fate […]

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    14. Demographics and lifestyle differences among typology groups

    Note: For a new and fully revised version of Pew Research Center’s political typology (published June 2026), read “Beyond Red vs. Blue: The 2026 Political Typology.” As the United States has grown more demographically diverse, the differences in the racial and ethnic composition of the Republican and Democratic coalitions have widened. These differences are clearly evident […]

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    As AI Spreads, Experts Predict the Best and Worst Changes in Digital Life by 2035

    As they watch the splashy emergence of generative artificial intelligence and an array of other AI applications, experts participating in a new Pew Research Center canvassing say they have deep concerns about people’s and society’s overall well-being. At the same time, they expect to see great benefits in health care, scientific advances and education

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    Methodology

    This section describes the sources and variables used for the analyses in this report. It explains known limitations of the data. Next, it outlines the strengths and weaknesses of the map used, as well as possible alternatives and reasons why data is shown as missing in some areas. Finally, the multilevel mixed-effects modeling used in […]

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    In their own words, how Americans explain why bad things happen

    Why is there so much suffering and evil in the world? This question can be particularly confounding for those who believe in a good and all-powerful God, as is often described in the Abrahamic religious traditions of Judaism, Christianity and Islam. For centuries, philosophers and theologians have grappled with this “problem of evil.”