China
Over half of the people in the world live in these 7 countries
The United Nations projects that the global population will pass 8 billion by the end of 2022, with over half of all people living in seven countries.
Conrad Hackett is associate director of research and senior demographer at Pew Research Center.
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Education
Muslim women's education is being limited by economics
New research shows that academic attainment is determined more by the state of the economy than religious restrictions.
Roles of Religion
Which are the world's biggest religions?
A demographic analysis by Pew Research Center explores the world's biggest religious groups, and finds that the number of Christians in Europe is falling.