David Masci

Religion and science have often been seen as being in conflict. But are religious faith and the scientific enterprise really at odds with each other?

The share of Americans whose primary religious affiliation is Catholic has fallen somewhat in recent years, and now stands at about one-in-five. But an additional one-in-ten American adults (9%) consider themselves Catholic or partially Catholic in other ways, even though they do not self-identify as Catholic on the basis of religion.

Only three Roman Catholics have ever run for president on a major party ticket, and all were Democrats. But that may be about to change. So far six Catholics (including some early favorites) are running for the 2016 Republican presidential nomination.

Some legal scholars and others are trying to determine how a ruling granting same-sex couples a constitutional right to wed might affect religious institutions.

Popes have written encyclicals on an array of topics, ranging from the nature of work to the virginity of Jesus’ mother, Mary.

Fact Tank sat down with David Campbell, a professor of political science at the University of Notre Dame, to explore what the new findings mean.

One big reason evangelical Protestants have not declined at the same rate as other major Christian groups is that they are gaining new converts at a greater rate than they are losing people who were raised in the tradition.

The number of Christians in Europe is forecast to drop by about 100 million by 2050, while the share of Muslims and smaller religious minorities will increase.

Demographer Conrad Hackett explains how he and his team put together our major new report and why it differs from past efforts to predict religious change.