Description:
For the past six years, researchers have been looking for ways to measure the effects of urbanization on biological productivity in countries around the world. To assist them with their research, they have created a method of mapping urbanization on a countrywide scale by using satellite images of the light cities generate at night. NASA's Earth Observatory web site provides a summary of this issue, with links. If the "glossary on" button is selected, key words become hotlinks to definitions.

Organization:
NASA Goddard Space Flight Center

URL:
http://earthobservatory.nasa.gov/Study/Lights/

Contact:
David Herring, dherring@climate.gsfc.nasa.gov, Mailstop 913.0, Building 33, Greenbelt MD 20771; Phone: (202) 286-8955

Cost:
Free over the Internet

Education Level:
General

Subject:
Biology
Global Environmental Change
Light
Population Growth

Resource Type:
Internet Site

Date Added to teachearth.com:
12/11/00