Scientists expect increasing marine heat waves to cause coral bleaching, which can result in reefs dying off. Kevin Lino/NOAA/NMFS/PIFSC/ESD hide caption
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Pictures of plaintiffs fly outside the court in The Hague, Netherlands, before Wednesday's ruling ordering Royal Dutch Shell to rein in its carbon emissions. Thousands of citizens joined the suit charging that Shell's fossil fuel investments endanger lives. Peter Dejong/AP hide caption