VATICAN CITY -- Pope Benedict XVI said Saturday that low birth rates in Canada are the result of the "pervasive effects of secularism" and asked the country's bishops to counter the trend by preaching the truth of Christ. Benedict, who has spoken out several times in favor of large families, blamed Canada's low birth rate on social ills and moral ambiguities that result from secular ideology. "Like many countries ... Canada is today suffering from the pervasive effects of secularism," Benedict told visiting bishops from Canada. "One of the more dramatic symptoms of this mentality, clearly evident in your own...