This newsletter summarizes discussions at the 2010 UN climate negotiations in Cancun, Mexico. It discusses recommendations for elements in the negotiating text from the Chair, including establishing a 1.5 degree Celsius temperature threshold, agreeing to global emissions peaking by 2015, and ensuring proper financing for adaptation and developing countries. It also recommends strengthening the texts on technology transfer and capacity building. The newsletter analyzes different sections of the negotiating text and calls on delegates to address remaining issues to achieve an ambitious agreement.