United Press International: Scientific evidence from the environmental community suggests global warming trends are the result of human activity, a U.N. official said in Ankara. Achim Steiner, the head of the U.N. Environment Program, deflected criticism of a U.N.-backed panel that admitted to errors in its reporting on the rate of climate change. The U.N. Intergovernmental Panel on Climate Change said in January it made errors in reports saying the Himalayan glaciers could melt away by 2035, which the …