As scientists debate whether global warming is affecting Earth, "climate witnesses" told a U.N. environmental conference Friday they are already feeling the heat of the changing weather patterns they say are drastically affecting the way of life from the Himalayas to the South Pacific. "In the past we just accepted it was the will of God," said Penina Moce, a woman from Udu, a fishing village in Fiji. "But now we believe there could be other reasons." Moce spoke as delegates from nearly 200 countries sat down in Buenos Aires for an annual gathering by government officials, scientists, and environmentalists...