Solar energy stocks led the market higher Monday on several analyst upgrades. In addition, the U.N. Climate Change Conference in Copenhagen, kicked off and the Environmental Protection Agency reported greenhouse gases are endangering people's health and must be regulated. Claymore/MAC Global Solar Energy (TAN) rose 3% to 10.07 in a little less than average volume. Shares broke above their 50-day moving average last week in scant volume. The ETF