Website: http://www.fws.gov/
The U.S. Fish and Wildlife Service is a bureau within the U.S. Department of the Interior. Its mission is to work with others to conserve, protect and enhance fish, wildlife and plants and their habitats for the continuing benefit of the American people.
USFWS National Digital Library
The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video and that are in the public domain. You are free to use them as you wish - no permission is necessary. See
here for more information.
The USFWS also maintains several
Flickr sites with additional pictures and videos.
Files from their library and photostreams have been made available here under their usage terms and US Copyright law. Additional keywords and/or descriptions may have been added or altered by PublicDomainFilies.com staff. Availability of these files on PublicDomainFiles.com does not imply, nor mean to imply, affiliation with or endorsement by the U.S. Fish and Wildlife Service. The USFWS logo is used here for reference and is not in the Public Domain.
Basic principles of climate science 
