CBS News: If the latest report from America's top weather experts is an indication, it's becoming really hard to deny global warming.
Temperatures last year across the world reached record highs, according to the "State of the Climate in 2014" report from National Oceanic and Atmospheric Administration Center for Weather and Climate. Sea levels continued to rise and glaciers kept shrinking while record concentrations of greenhouse gases including carbon dioxide, methane and nitrous oxide were recorded in...