Climate change could push more than 200 million people to leave their homes in the next three decades and create migration hotspots unless urgent action is taken to cut global emissions and bridge the development gap, a World Bank report has found. The second part of the Groundswell report published Monday examines how the impacts of slow-onset climate change such as water scarcity, decreasing crop productivity and rising sea levels could lead to millions of what the report describes as "climate migrant" by 2050 under three different scenarios with varying degrees of climate action and development. Under the most pessimistic scenario, with a high level of emissions and unequal development, the report forecasts up to 216 million people moving within their own countries across the six regions analysed – Latin America, North Africa, Sub-Saharan Africa, Eastern Europe and Central Asia, South Asia, and East Asia and the Pacific. READ: Dhaka seeks support to address climate change challenges In the most climate-friendly scenario, with a low level of emissions and inclusive, sustainable development, the number of migrants could be as much as 80% lower but still result in the move of 44 million people.