The Pew Research Center study on “The World’s Muslims” has generated a great deal of domestic and international attention. We have received many emails from readers and are grateful for the interest and feedback. Here are answers to some of the most common questions we have been receiving.

A new survey report looks at attitudes among Muslims in 39 countries on a wide range of topics, from science to sharia, polygamy to popular culture. The survey finds that overwhelming percentages of Muslims in many countries want Islamic law to be the official law of their land, but there is also widespread support for democracy and religious freedom. 

The world’s Muslims are united in their belief in God and the Prophet Muhammad and are bound together by such religious practices as fasting during Ramadan and almsgiving to assist the needy. But they have widely differing views about other aspects of their faith, including how important religion is to their lives, who counts as a Muslim and what practices are acceptable in Islam.

Tolerance and Tension: Islam and Christianity in Sub-Saharan Africa, a 19-country survey by the Pew Research Center's Forum on Religion & Public Life, reveals that the vast majority of people in many sub-Saharan African nations are deeply committed to Christianity or Islam, and yet many continue to practice elements of traditional African religions.

A new 19-country survey by the Pew Forum reveals that the vast majority of people in many sub-Saharan African nations are deeply committed to Christianity or Islam, and yet many continue to practice elements of traditional African religions.

Data from a 10-country survey of Pentecostals conducted by the Pew Research Center's Forum on Religion & Public Life in 2006 provides estimates of the religious affiliation of South Africa's urban population.

A 2007 survey by the Pew Research Center's Global Attitudes Project found that a majority of Americans say it is necessary to believe in God in order to be moral and have good values.

The Pew Research Center conducted more than 55,000 interviews to obtain a national sample of 1,050 Muslims living in the United States.

Pentecostalism and related charismatic movements represent one of the fastest-growing segments of global Christianity. Even more than other Christians, Pentecostals and other renewalists believe that God, acting through the Holy Spirit, continues to play a direct, active role in everyday life.