Photographs provided by the Precourt Institute for Energy at Stanford University are to be used -- with appropriate credit -- for editorial purposes only.
Flopping, altering or otherwise embellishing these photos in any way that changes the photographs' editorial content is prohibited. Images provided for web use must be resized to low resolution. Permission is for one-time use only.
Supplied image file must be deleted after use.
For more information, email firstname.lastname@example.org.