This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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This work is based on a work in the public domain. It has been digitally enhanced and/or modified. This derivative work has been (or is hereby) released into the public domain by its author, Ilmari Karonen. This applies worldwide. In some countries this may not be legally possible; if so: Ilmari Karonen grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

• 2007-10-15 05:22 Ilmari Karonen 540×705× (201750 bytes) tweak recoloring to reduce color artifacts where intensities don't match
• 2007-10-14 18:55 Rugby471 540×703× (343085 bytes) colors made the same
• 2007-09-29 23:17 Sagredo 540×705× (163610 bytes) These images show the Yangtze River in the vicinity of the Three Gorges Dam (lower right). Landsat 7 acquired the top image on November 7, 2006, after the main wall was complete. Landsat 5 acquired the bottom image on April 17, 1987