Which Religion Is Really Growing Fastest on Earth? The Answer Isn't Conversion

Which religion is growing fastest? The answer depends on how you measure growth. Using Pew Research Center data, this explainer reveals why population growth, not conversion, drives global religious change. Discover how Islam expanded rapidly, why Christianity added millions yet lost global share, why the religiously unaffiliated surged in wealthier countries, and why some faiths are declining. Lea the four different ways to define the world's fastest-growing religion with surprising, evidence-based conclusions explained clearly for everyone today in minutes. Watch.