Zoom in showing true color, then changing to daytime thermal, then nighttime thermal, using mountain top, Landsat, ATLAS thermal, land use, and clouds-convection data

Ecologists now accept human beings and our activities as a significant influence on the Earths ecology. ASTER data is being used to better understand urban ecology, in particular how humans build their cities and affect the surrounding environment. Will Stefanov of Arizona State University will present the first set of ASTER images of the urban skeleton of the amount of built structures in 12 cities around the world and discuss the Urban Environmental Monitoring project which will examine 100 urban centers to look for common features (or lack of them) in global city structure and monitor change over time.

Ecologists now accept human beings and our activities as a significant influence on the Earths ecology. ASTER data is being used to better understand urban ecology, in particular how humans build their cities and affect the surrounding environment. Will Stefanov of Arizona State University will present the first set of ASTER images of the urban skeleton of the amount of built structures in 12 cities around the world and discuss the Urban Environmental Monitoring project which will examine 100 urban centers to look for common features (or lack of them) in global city structure and monitor change over time.

Ecologists now accept human beings and our activities as a significant influence on the Earths ecology. ASTER data is being used to better understand urban ecology, in particular how humans build their cities and affect the surrounding environment. Will Stefanov of Arizona State University will present the first set of ASTER images of the urban skeleton of the amount of built structures in 12 cities around the world and discuss the Urban Environmental Monitoring project which will examine 100 urban centers to look for common features (or lack of them) in global city structure and monitor change over time.

In this web-based, interactive story, Tutangiaq (Too-tang-geye-ack - nicknamed 2T), a Canada Goose, flies across Alaska looking for his family. As he flies, he tells children about the fascinating 49th state. Children learn how Alaska was purchased from the Russians, and other facts about the state. They can also compare the size of Alaska to other states. 2T takes a flight across the volcanic chain in Alaska and helps the students to interactively explore how scientists monitor volcanoes from satellite images in near-real time. At the coast, the bird also meets his Walrus friend who shows him how the sea ice edge has receded and gives an example of an adverse effect on marine life. Finally, 2T arrives in Fairbanks where children use satellite imagery to help 2T find and unite with his family.

This site presents a collection of scientific learning resources for educators, parents, kids, after-school coordinators, informal learning center staff, and anyone else interested in teaching or learning about science. The site provides a searchable database of resource materials, including activities (computer based and otherwise), curriculum materials, articles, evidence and analytical tools and procedures, exhibition materials, reference lists, and special collections of resources organized around a particular theme. Users can browse resources by topic, sub-topic, grade level, or resource type. Each resource is displayed with a concise description that includes the title, resource type, grade level, and key concepts. Clicking the icon next to the title displays the full resource description. If available, other icons link to the resource in print format, Web format, or both.

The Aral Sea is actually not a sea at all, but an immense fresh water lake. In the last thirty years, more than sixty percent of the lake has disappeared because much of the river flow feeding the lake was diverted to irrigate cotton fields and rice paddies. Concentrations of salts and minerals began to rise in the shrinking body of water, leading to staggering alterations in the lakes ecology and precipitous drops in the Arals fish population. Powerful winds that blow across this part of Asia routinely pick up and deposit the now exposed lake bed soil. This has contributed to a significant reduction in breathable air quality, and crop yields have been appreciably affected due to heavily salt laden particles falling on arable land. This series of Landsat images taken in 1973, 1987 and 2000 show the profound reduction in overall area at the north end of the Aral, and a commensurate increase in land area as the floor of the sea now lies exposed.

A flyby of Atlanta, from Landsat imagery draped over elevation data

Atlanta with opening labels (542). This scene shows Landsat Thematic Mapper data from the shortwave infrared (TM band 5), infrared (TM band 4), and visible green( TM band 2) channels of Atlanta.

A simulation showing the correlation between thermal and visible Landsat data of the Atlanta Heat Island

A comparison of land use and thermal infrared data of Atlanta from Landsat

A animation showing the correlation between thermal and visible Landsat data of the Atlanta Heat Island

A animation showing the correlation between thermal and visible Landsat data of the Atlanta Heat Island

A perspective view of a Landsat image of the Atlanta region

A Landsat image of the Atlanta region

A perspective view of a Landsat thermal image of the Atlanta region

A Landsat thermal image of the Atlanta region

A flyby of the Atlanta area, with regions of high urban growth indicated in gray

A flyby of Atlanta in false color infrared using Landsat data