A global network of aid agencies says world powers consider climate change the most significant challenge to humanitarian work.
The International Federation of Red Cross and Red Crescent Societies says rich, middle-income and poor nations expect aid agencies to face more demands caused by climate change-related emergencies such as floods.
The group's conclusion is based on a survey the federation commissioned of the G-20 nations and Kenya. Climate change got the most unprompted mentions.
World leaders will meet in Copenhagen next month for a key climate summit. President Barack Obama and other leaders have said it is unrealistic to expect the summit to complete a full treaty to cut greenhouse gas emissions.