1 2 Bazaz, Amir; Bertoldi, Paolo; Buckeridge, Marcos; Cartwright, Anton; de Coninck, Heleen; Engelbrecht, Francois; Jacob, Daniela; Hourcade, Jean-Charles; Klaus, Ian; de Kleijne, Kiane; Lwasa, Shauib; Markgraf, Claire; Newman, Peter; Revi, Aromar; Rogelj, Joeri; Schultz, Seth; Shindell, Drew; Singh, Chandni; Solecki, William; Steg, Linda; Waisman, Henri (2018). "Summary for Urban Policymakers – What the IPCC Special Report on 1.5C Means for Cities". doi:10.24943/scpm.2018. {{cite journal}}: Cite journal requires |journal= (help) ↑ "68% of the world population projected to live in urban areas by 2050, says UN | UN DESA | United Nations Department of Economic and Social Affairs". www.un.org. Retrieved 7 October 2021. ↑ "With people crowding into urban areas, how can cities protect themselves against climate change?".