The Church "should also protect man from the destruction of himself. A sort of ecology of man is needed," the pontiff said in a holiday address to the Curia, the Vatican's central administration.

"The tropical forests do deserve our protection. But man, as a creature, does not deserve any less."

The Catholic Church teaches that while homosexuality is not sinful, homosexual acts are. It opposes gay marriage and, in October, a leading Vatican official called homosexuality "a deviation, an irregularity, a wound." ...