United Press International: A federal report maintains climate change is already affecting U.S. water resources, agriculture, land resources and biodiversity. The report, led by the U.S. Department of Agriculture, was written by 38 authors from universities, national laboratories, non-governmental organizations and federal agencies, the U.S. Climate Change Science Program said Wednesday in a news release. The report said alterations to U.S. ecosystems and services are expected to accelerate in the …