Press Association: Pope Benedict XVI has arrived in Australia on a pilgrimage he says he wants to use to raise awareness about global warming and address the crisis of clergy sexual abuse. Benedict’s plane landed in the northern city of Darwin after a more than 20-hour flight from the Vatican. His plane was making a brief refuelling stop before flying on to Sydney, where he will lead celebrations at the World Youth Day festival. Benedict, 81, will spend three days resting at a retreat in …