Pope Benedict XVI

Next month brings "March madness" for fans of college basketball.

It's also going to bring Roman Catholic cardinals together to choose a new pope.

Which means, according to Religion News Service, it's time to "make your picks in the Vatican's Sweet Sistine brackets!"

(Most recent update: 2:50 p.m ET.)

For the first time in nearly 600 years, a pope is resigning from his post as leader of the Roman Catholic Church.

Pope Benedict XVI announced Monday morning that he is stepping down effective Feb. 28.