28% of Americans are now religiously unaffiliated. A new study from Pew Research looks at how atheists, agnostics and those whose religion is "nothing in particular" view God, religion and morality.

At a time when empty pews are forcing churches across the country to close, megachurches are largely bucking that trend — attracting younger, more vibrant and more diverse congregations.

The sharp uptick in the number of younger Americans with no religious affiliation is driving a seismic shift that is leaving sometimes shattered congregations in its wake.