With a project called Global Urban Footprints, scientists use radar imagery to reveal human development around the world.
Minneapolis, United States
The images are presented in three colors — black for urban areas; white for land surface; and grey for water. Minneapolis, Minnesota, is shown here.
A radar image of Tokyo, Japan.
A visible light image of Tokyo, Japan
A radar image of Cairo, Egypt.
Radar imagery of Brussels, Germany.
Ho Chi Minh City, Vietnam
A satellite radar image of Ho Chi Minh City, Vietnam.
Satellite radar image of Delhi, India.
A visible light image of Delhi, India.
Los Angeles, United States
Human development in Los Angeles, California, viewed with satellite radar.
The region around Munich, Germany, viewed with satellite radar.
The human footprint of Paris, France.
Settlements surrounding Cologne, Germany.
A visible light image of Cologne, Germany.
The settlement pattern of Berlin, Germany, as seen from space.
Becky Oskin, Contributing Writer
Becky Oskin covers Earth science, climate change and space, as well as general science topics. Becky was a science reporter at Live Science and The Pasadena Star-News; she has freelanced for New Scientist and the American Institute of Physics. She earned a master's degree in geology from Caltech, a bachelor's degree from Washington State University, and a graduate certificate in science writing from the University of California, Santa Cruz.