Scientists behind a landmark study of the links between oceans, glaciers, ice caps and the climate delivered a stark warning to the world on Wednesday: slash emissions or watch cities vanish under rising seas, rivers run dry and marine life collapse. Days after millions of young people demanded an end to the fossil fuel era at protests around the globe, a new report by a U.N.-backed panel of experts found that radical action may yet avert some of the worst possible outcomes of global warming. But the study was clear that allowing carbon emissions to continue their upward path would upset the balance of the great geophysical systems governing oceans and the frozen regions of the Earth so profoundly that nobody would escape untouched. “Everybody in the world will be affected by the changes we are seeing,” Michael Meredith, an oceanographer with the British Antarctic Survey and one of the report’s authors, told Reuters. “The key thing that’s coming out of the report is that we have a choice. The future isn’t set in stone,” he said. To view the full article visit NBC News.