Climate change could push more than 100 million people into extreme poverty by 2030 by disrupting agriculture and fueling the spread of malaria and other diseases, the World Bank said in a report Sunday. "They have fewer resources and receive less support from family, community, the financial system, and even social safety nets to prevent, cope and adapt," the Washington-based World Bank said. The report referred to studies showing climate change could result in global crop yield losses as large as 5 per cent by 2030 and 30 per cent by 2080. It also referenced studies showing warming temperatures could increase the number of people at risk for malaria by 150 million. Stephane Hallegatte, one of the authors, said the "hotspots" for climate impacts on poor people were sub-Saharan Africa and South Asia. How to help poor countries - and poor communities within countries - deal with climate change is one of the crunch issues in talks on a global climate accord that's supposed to be adopted next month in Paris. Developing countries are calling for commitments beyond 2020 in the Paris agreement but rich nations are reluctant to make firm promises, in part due to budget uncertainties. A recent report by the Organization for Economic Cooperation and Development estimated climate finance flows to developing countries reached $62 billion in 2014.