The Dalai Lama's four-day New York City visit ends with an interfaith dialogue at the Cathedral of St. John the Divine. The cathedral is home to 10 monks from South India’s Drepung Loseling Monastery, who are creating a Sand Mandala in honor of the Tibetan spiritual leader's visit.The colorful mandalas, which take hours of painstaking work to construct, are destroyed as a symbol of the Buddhist belief in the fleeting nature of the material life. Less