HOW GROWN-UPS BEHAVE:

In sign of respect to Islam, pope prays in Istanbul's Blue Mosque (John Thavis, 11/30/2006, Catholic News Service)

Pope Benedict XVI prays with Mustafa Cagrici, the grand mufti of Istanbul, as he visits the Blue Mosque in Istanbul, Turkey, Nov. 30. The pope's visit marked only the second time a pontiff has entered a mosque.

As the pope walked with Mustafa Cagrici, the grand mufti of Istanbul, to the "mihrab" niche that points the way toward Mecca, the mufti said he was going to pray.

The pope stood alongside him, bowed his head and moved his lips in silence for about a minute.