https://www.sciencedaily.com/releases/2022/03/220314154353.htm

Within the next 30 years, the global urban population is projected to increase by 2.5 billion people, which will greatly increase urban spread. Much of this urban expansion is predicted to occur in biodiversity hotspots -- areas rich with species that are at a high risk for destruction due to human activity -- imperiling a wide variety of species, many of which are already threatened by extinction.

Expansion is projected to result in up to 1.53 million square kilometers of new urbanized land, directly threatening 855 species, according to the findings of a new Yale-led study published in in the Proceedings of the National Academy of Sciences. The study is co-authored by Karen Seto, Frederick C. Hixon Professor of Geography and Urbanization Science at Yale School of the Environment (YSE); Rohan Simkin, a Ph.D. student at YSE; Walter Jetz, director of the Yale Center for Biodiversity and Global Change and professor of ecology and evolutionary biology at Yale; and Robert McDonald, lead scientist for nature-based solutions at The Nature Conservancy.