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News Release

July 25, 2007
Jan Nelson 605-594-6173


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The U.S. Geological Survey (USGS), in cooperation with the National Aeronautics and Space Administration (NASA), is pleased to announce the release of the TerraLook data product. A TerraLook product is a user-specified collection of JPEG images created from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) images from the NASA Land Processes Distributed Active Archive Center, and Tri-Decadal Global Landsat Orthorectified images from the USGS archive.

TerraLook will serve GIS, natural resource management, education, and other communities, and provide easily accessible remotely-sensed data. TerraLook images are designed for visual interpretation and display, and are of value to anyone who wants to see the changes to the Earth's surface over the last 30 years.

 Landsat MSS
23 Feb 1973
Landsat TM
19 Apr 1989 
Landsat ETM+
6 Jul 2000 
17 Sep 2003 
Image showing 4 different views taken from Landsat satellites since 1973


The images document the changes near the confluence of the Iguazú and Paraná Rivers, which separate Argentina, Brazil and Paraguay.

TerraLook products are available through the USGS Global Visualization Viewer at no cost to the user. Please visit the TerraLook web site to learn more about TerraLook collections.

TerraLook builds on the success of the NASA Jet Propulsion Laboratory's Protected Area Archive project with additional support from The Nature Conservancy, the World Bank Development Grant Facility's Inter-American Biodiversity Information Network Connectivity Project, the U.S. State Department, the Gordon and Betty Moore Foundation Amazon Protected Area Network project, and the World Conservation Union.

USGS provides science for a changing world. For more information, visit

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