Activists had a series of events and actions lined up Tuesday at the United Nations climate summit seeking to amp up pressure on conference participants to agree to phase out coal, oil and gas, responsible for most of the world's emissions, and move to clean energy in a fair way.
The question of how to handle fossil fuels is central to the talks, which come after a year of record heat and devastating weather extremes around the world. And even as the use of clean energy is growing, most energy companies have plans to continue aggressive pursuit of fossil fuel production well into the future.
