In 50 years, Islam may be the world's largest religion, according to Pew

[Alexmahone]

Why Muslims are the world’s fastest-growing religious group



How do you feel about this research? 

Personally, I think they've underestimated the growth rate of atheists/agnostics. In particular, one always has to assume that the top x% of people in any religion, including Islam, will become atheists/agnostics.

[The Valkyrie]

On paper it might be.

But I’ve read reports that suggest a higher number of atheists in Muslim countries thanI would have thought.

[Minimalist]

I wonder how they account for muslims killing each other in the name of allah.  That's always an effective check on population growth.