Urbanization is the population shift from rural to urban areas, the corresponding decrease in the proportion of people living in rural areas, and the ways in which societies adapt to this change. It can also mean population growth in urban areas instead of rural ones. It is predominantly the process by which towns and cities are formed and become larger as more people begin living and working in central areas.
Urban ecology is the scientific study of the relation of living organisms with each other and their surroundings in an urban environment. An urban environment refers to environments dominated by high-density residential and commercial buildings, paved surfaces, and other urban-related factors that create a unique landscape. The goal of urban ecology is to achieve a balance between human culture and the natural environment.
Urban geography is the subdiscipline of geography that derives from a study of cities and urban processes. Urban geographers and urbanists examine various aspects of urban life and the built environment. Scholars, activists, and the public have participated in, studied, and critiqued flows of economic and natural resources, human and non-human bodies, patterns of development and infrastructure, political and institutional activities, governance, decay and renewal, and notions of socio-spatial inclusions, exclusions, and everyday life. Urban geography includes different other fields in geography such as the physical, social, and economic aspects of urban geography. The physical geography of urban environments is essential to understand why a town is placed in a specific area, and how the conditions in the environment play an important role with regards to whether or not the city successfully develops. Social geography examines societal and cultural values, diversity, and other conditions that relate to people in the cities. Economic geography is important to examine the economic and job flow within the urban population. These various aspects involved in studying urban geography are necessary to better understand the layout and planning involved in the development of urban environments worldwide.
Christopher B. Field is an American scientist and researcher, who has contributed to the field of climate change. The author of more than 200 scientific publications, Field's research emphasizes impacts of climate change, from the molecular to the global scale. His work includes major field experiments on responses of California grassland to multi-factor global change, integrative studies on the global carbon cycle, and assessments of impacts of climate change on agriculture. Field's work with models includes studies on the global distribution of carbon sources and sinks, and studies on environmental consequences of expanding biomass energy.
Dorceta E. Taylor is an American environmental sociologist known for her work on both environmental justice and racism in the environmental movement. She is the senior associate dean of diversity, equity, and inclusion at Yale School of the Environment, as well as a professor of environmental justice. Prior to this, she was the director of diversity, equity, and inclusion at the University of Michigan's School of Environment and Sustainability (SEAS), where she also served as the James E. Crowfoot Collegiate Professor of Environmental Justice. Taylor's research has ranged over environmental history, environmental justice, environmental policy, leisure and recreation, gender and development, urban affairs, race relations, collective action and social movements, green jobs, diversity in the environmental field, food insecurity, and urban agriculture.
The contributions of women in climate change have received increasing attention in the early 21st century. Feedback from women and the issues faced by women have been described as "imperative" by the United Nations and "critical" by the Population Reference Bureau. A report by the World Health Organization concluded that incorporating gender-based analysis would "provide more effective climate change mitigation and adaptation."
Nancy B. Grimm is an American ecosystem ecologist and professor at Arizona State University. Grimm's substantial contributions to the understanding of urban and arid ecosystem biogeochemistry are recognized in her numerous awards. Grimm is an elected Fellow of the American Geophysical Union, Ecological Society of America, and the American Association for the Advancement of Science.
Diana Ürge-Vorsatz is a Hungarian scientist. She is a Vice-Chair of the IPCC, and professor of Environmental Sciences at Central European University. She is the Director of the Center for Climate Change and Sustainable Energy Policy. She has published widely on environmental and energy studies, primarily climate change mitigation.
Julia K. Steinberger is Professor of Ecological Economics at the University of Lausanne. She studies the relationships between the use of resources and performance of societies. She is an author of the Intergovernmental Panel on Climate Change (IPCC) 6th Assessment Report, contributing to the report's discussion of climate change mitigation pathways.
Terri S. Hogue is an American hydrologist. She is currently a professor and department head of Civil and Environmental Engineering at Colorado School of Mines. Her research focuses on different hydrologic and land surface processes in semi-arid regions and the implications of them on water resource management.
Karen Chapple is an American city planning academic and currently holds the Carmel P. Friesen Chair in Urban Studies at the University of California, Berkeley.
Katherine Calvin is NASA's Chief Scientist and Senior Climate Advisor. In July 2023, she was elected co-chair of the Intergovernmental Panel on Climate Change (IPCC) Working Group III. As an earth scientist at the Joint Global Change Research Institute (JGCRI), she has researched human use of global resources using Earth modeling systems at JGCRI under the direction of Pacific Northwest National Laboratory (PNNL) and the University of Maryland. She has contributed to the third US National Climate Assessment as well as two special reports by the Intergovernmental Panel on Climate Change (IPCC).
Ingrid C. "Indy" Burke is the Carl W. Knobloch, Jr. Dean at the Yale School of Forestry & Environmental Studies. She is the first female dean in the school's 116 year history. Her area of research is ecosystem ecology with a primary focus on carbon cycling and nitrogen cycling in semi-arid rangeland ecosystems. She teaches on subjects relating to ecosystem ecology, and biogeochemistry.
Michelle L. Bell is an American environmental engineer. Since 2015, she has been the Mary E. Pinchot Professor of Environmental Health at the Yale School of the Environment. In 2020, Bell was named a member of the National Academy of Medicine for her research into understanding the critical links between the environment and public health.
Xuemei Bai (白雪梅) is a professor of Urban Environment and Human Ecology at the Australian National University. She was the winner of the 2018 Volvo Environmental Prize, and is an elected fellow of the Academy of the Social Sciences in Australia.
Land change science refers to the interdisciplinary study of changes in climate, land use, and land cover. Land change science specifically seeks to evaluate patterns, processes, and consequences in changes in land use and cover over time. The purpose of land change science is to contribute to existing knowledge of climate change and to the development of sustainable resource management and land use policy. The field is informed by a number of related disciplines, such as remote sensing, landscape ecology, and political ecology, and uses a broad range of methods to evaluate the patterns and processes that underlie land cover change. Land change science addresses land use as a coupled human-environment system to understand the impacts of interconnected environmental and social issues, including deforestation and urbanization.
Qihao Weng is an American geographer, urban, environmental sustainability, and remote sensing scientist. He has been a Chair Professor at the Hong Kong Polytechnic University since July 2021, and was the Director of the Center for Urban and Environmental Change and is a professor of geography in the Department of Earth and Environmental Systems at the Indiana State University.
Jianguo Liu is a Chinese American ecologist and sustainability scientist specializing in the human-environment and sustainability studies. He is University Distinguished Professor at Michigan State University.
Lucy Hutyra is an American urban ecologist who is a professor of earth and environment at Boston University. Her research uses a multi-disciplinary approach to understand the terrestrial carbon cycle. She was named a MacArthur Fellow in 2023.
Aliyu Salisu Barau is a Nigerian academic and a full professor of Urban and Regional Planning at Bayero University Kano. He is the Dean of the Faculty of Earth and Environmental Sciences at Bayero University Kano and the West Africa Hub Director of the Urban Climate Change Research Network (UCCRN), affiliated with the Earth Institute, Columbia University. He is also a Chartered Town Planner of the UK's Royal Town Planning Institute (RTPI).
