
Global Developments and Geopolitical Shifts in Early 2019
The Chinese Chang'e 4 probe achieved the first-ever landing on the far side of the Moon on January 3, 2019.

Open content, often referred to as free or libre content, encompasses creative works—including literature, software, music, and imagery—that are made available under legal frameworks allowing for the study, modification, and distribution of the material with minimal restrictions. Unlike traditional proprietary works, which are governed by restrictive copyright, open content is designed to facilitate collaboration and the expansion of the digital commons.

In most jurisdictions, the Berne Convention establishes that copyright is granted to creators by default. To make a work "open," an author must explicitly release it under a specific license. These licenses function as a legal bridge, granting users freedoms—such as the right to copy or adapt the work—while often retaining certain obligations, such as the requirement to provide attribution to the original creator.

Works that are not subject to copyright, either because the term has expired or because they were never eligible, reside in the public domain. In contrast, copyleft is a strategic use of copyright law designed to ensure that a work and its derivatives remain free for all users. By requiring that modified versions be distributed under the same terms as the original, copyleft prevents the enclosure of shared knowledge.

While various definitions exist, the core philosophy of open content aligns with the "Definition of Free Cultural Works." Organizations like the Open Knowledge Foundation emphasize that "open" implies the ability for anyone to access, use, and share information without discrimination. This movement shares ideological roots with the free software and open-source software communities, often utilizing standardized licensing frameworks such as Creative Commons (CC BY, CC BY-SA, and CC0) to codify these permissions.
No. Public domain works have no copyright protection, whereas open content is still copyrighted but is released under a license that grants users specific freedoms.
"History – Definition of Free Cultural Works". Freedomdefined.org. Archived from the original on 30 October 2012. Retrieved 14 November 2012.
Alma Swan; Sheridan Brown (May 2005). "Open access self-archiving: An author study" (PDF). Key Perspectives Limited. Archived from the original (PDF) on 8 February 2012. Retrieved 26 July 2010.
"About OpenCourseWare". Archived from the original on 22 April 2009. Retrieved 10 April 2009.
Wiley, David (1998). "Open Content". OpenContent.org. Archived from the original on 28 January 1999. Retrieved 17 April 2012.
Moxley, Joe (2013). "Open Textbook Publishing". American Association of University Professors. Archived from the original on 16 June 2025. Retrieved 16 June 2025.
NMC (2012). "One Year or Less: Open Content". 2010 Horizon Report. Archived from the original on 16 March 2012. Retrieved 18 April 2012.
"Policy on Enhancing Public Access to Archived Publications Resulting from NIH-Funded Research". Archived from the original on 24 November 2010. Retrieved 12 July 2009.
Open Definition 2.1 Archived 27 January 2017 at the Wayback Machine on opendefinition.org
"Open access - RCUK Policy and revised guidance". Archived from the original on 21 March 2018. Retrieved 13 July 2016.
Honsig, Markus (25 January 2006). "The most open of all cars". Technology Review (in German). Heinz Heise. Archived from the original on 6 April 2009. Retrieved 22 March 2009.