(FILES) Ghanaian cardinal Peter Kodwo Appiah Turkson walks holding a palm during the Palm Sunday celebrations at St Peter’s square on April, 2014 at the Vatican. AFP PHOTO / GABRIEL BOUYS. As Africa’s share of the Catholic population booms, mirroring its growing share of the world population as the continent grows while Europe has greyed and secularised, renewed attention has turned to whether the church is ready for its first black pope. (Photo by Gabriel BOUYS / AFP)