Greenpeace 's chief scientist Doug Parr said the report highlighted `` just how urgent the need is for the international community to tackle climate change . '' Climate change may be `` serious obstacle '' to sustainable growth in key cities , says report . The climate change vulnerability index is published by risk analysis firm Maplecroft . It ranks the world's most vulnerable countries on a scale of 1 - 5 with higher numbers indicating greater risks and lower values representing less risk. Bangladesh was the most vulnerable country and its capital the most vulnerable city .
Climate change may be `` serious obstacle '' to sustainable growth in key cities , says report . The climate change vulnerability index is published by risk analysis firm Maplecroft . It ranks the world's most vulnerable countries on a scale of 1 - 5 with higher numbers indicating greater risks and lower values representing less risk. Bangladesh was the most vulnerable country and its capital the most vulnerable city .