What is Creative Commons licensing?

Creative Commons is a non-profit organization that has released several copyright licences known as Creative Commons licences free of charge to the public. The licences grant rights to the users of the content but do not replace the copyright, which remains with the copyright owner. IOP generally publishes open access articles under a CC BY 3.0 licence. This licence lets others distribute, remix, tweak and build upon the author’s work, even commercially, as long as they credit the author for the original creation.