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authorKT <tran0563@umn.edu>2021-10-04 21:25:55 -0500
committerKT <tran0563@umn.edu>2021-10-04 21:25:55 -0500
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+Earthquake data from http://earthquake.usgs.gov/research/data/centennial.php.
+As per http://www.usgs.gov/laws/info_policies.html, this data is in the public domain.
+Credit: U.S. Geological Survey
+Department of the Interior/USGS
+
+Earth texture from http://earthobservatory.nasa.gov/Features/BlueMarble/BlueMarble_monthlies.php
+As per http://www.jsc.nasa.gov/policies.html#Guidelines, this data is in the public domain.
+Data produced by NASA’s Earth Observatory