The failure of UN climate negotiations to double down on a global pledge to move away from planet-heating fossil fuels on Sunday was decried by experts as a “worrying” setback to global progress on curbing warming. The failure of UN climate negotiations to double down on a global pledge to move away from planet-heating fossil fuels on Sunday was decried by experts as a “worrying” setback to global progress on curbing warming. Environment Phys.org – latest science and technology news stories