All online sources accessed on
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a review on global hydrological cycles
Oki, T., and Kanae, S., ‘Global hydrological cycles and world water resources’, Science, 313 (5790), 2006: 1068–72, https://doi.org/10.1126/science.1128845. -
a report compiled by the United Nations Office for Disaster Risk Reduction
United Nations Office for Disaster Risk Reduction and Centre for Research on the Epidemiology of Disasters, ‘The human cost of disasters: an overview of the last 20 years (2000–2019)’, 12 October 2020, https://reliefweb.int/report/world/human-cost-disasters-overview-last-20-years-2000-2019.According to the Ecological Threat Register
Institute for Economics and Peace, Ecological Threat Register 2020: Understanding Ecological Threats, Resilience and Peace, September 2020), https://www.visionofhumanity.org/wp-content/uploads/2020/10/ETR_2020_web-1.pdf1.2 billion people could be forced to migrate
https://www.visionofhumanity.org/wp-content/uploads/2020/10/ETR_2020_web-1.pdf216 million could be internally displaced
Clement, V., et al., Groundswell Part 2: Acting on Internal Climate Migration, World Bank working paper, 13 September 2021, https://openknowledge.worldbank.org/handle/10986/36248.approximately 733 million people … are especially at risk
United Nations Water, Summary Progress Update 2021: SDG 6 – Water and Sanitation for All, July 2021, https://www.unwater.org/app/uploads/2021/07/SDG-6-Summary-Progress-Update-2021_Version-July-2021.pdf.