Following a year of record heat and drought, this year's U.N. climate summit will feature a contentious set of issues for countries working to find common ground in tackling climate change, including whether to phase out fossil fuels and how to finance the energy transition in developing countries. The main task at COP28 is a first-time assessment of countries' progress towards meeting the 2015 Paris Agreement's goal of limiting the global temperature rise to "well below" 2 degrees Celsius, while aiming for 1.5C. With global efforts lagging, countries will try during this "global stocktake" to agree on a plan to get the world on track to meet climate goals, which could include urgent steps towards cutting CO2 emissions or boosting green technology investments.