The unprecedented four-day Vatican summit on clerical abuse ended yesterday with the launch of a new online centre for child protection (homepage, full PDF texts of all conference speeches). Benedict XVI has invited the African Cardinal Laurent Monsengwo of Kinshasa to preach his Lenten retreat (video). Mgr Valentino Miserachs Grau, president of the Pontifical Institute of Sacred Music, has called for the creation of a Vatican commission to promote Gregorian chant (video). Erin Manning disputes the oft-cited claim that 98 per cent of American Catholic women use contraception. And the Atlantic publishes Christopher Hitchens's last article, a review of Fr Ian Ker's biography of GK Chesterton.