Photo Credits

Photo	Creator	License	Link
	Asurnipal	CC BY-SA 4.0	Source
	National Institute of Standards and Technology	Public domain	Source
	U.S. Navy photo by Rick Naystatt	Public domain	Source
	Wikideas1	CC0	Source
	Asurnipal	CC BY-SA 4.0	Source
	Ja.hess10	CC BY-SA 4.0	Source
	Photo by Jeff Martin. – U.S. Department of Energy from United States	Public domain	Source
	Sun Vault Roofing	CC BY-SA 4.0	Source
	Cboyce89	CC BY-SA 4.0	Source
	Lionel Allorge	CC BY-SA 3.0	Source
	Deoma12	CC BY-SA 4.0	Source
	Pacific Southwest Region USFWS from Sacramento, US	Public domain	Source
	Lucas Braun	CC BY-SA 3.0	Source
	Ferrowohlen	CC BY-SA 3.0	Source
	ENERGY.GOV	Public domain	Source
	Σ64	CC BY	Source
	Hayan Alhasan	CC BY-SA 4.0	Source
	Photo by Riley Harwood. – U.S. Department of Energy from United States	Public domain	Source
	David Shankbone	CC BY	Source
	The White House	Public domain	Source
	Photo by Lindsey Dillon. – U.S. Department of Energy from United States	Public domain	Source
	Photo by Lindsey Dillon. – U.S. Department of Energy from United States	Public domain	Source
	Photo by Lindsey Dillon. – U.S. Department of Energy from United States	Public domain	Source
	Unknown	Public domain	Source
	U.S. Department of Energy	CC0	Source
	Stephen Yang / The Solutions Project	Public domain	Source
	SayCheeeeeese	CC0	Source
	Pengo	CC BY-SA 3.0	Source
	Asurnipal	CC BY-SA 4.0	Source
	Asurnipal	CC BY-SA 4.0	Source
	Claus Ableiter	CC BY-SA 3.0	Source
	Asurnipal	CC BY-SA 4.0	Source
	RobbieIanMorrison	CC BY	Source
	David Ratledge	CC BY	Source
	Deo photographer	CC BY-SA 4.0	Source
	AS Photography from Poland	CC BY	Source

Photos are sourced from Wikimedia Commons and other open-licence libraries under the licences shown (CC0, Public Domain, CC BY, CC BY-SA). Images were resized for the web.