Bloomberg: The world must halt fossil-fuel emissions within the next six decades to stave off irreversible impacts that may stem from a warming planet, the United Nations said. Sometime between 2055 and 2070, any carbon dioxide produced as the result of burning oil, coal and natural gas should should be compensated with measures that suck the gas out of the atmosphere, the UN Environment Program said today in its annual Emissions Gap report. Those may include planting trees or using carbon-capture technology....