The American Physical Society (APS) and The European Organization for Nuclear Research (CERN), as the host organization of SCOAP³ (Sponsoring Consortium for Open Access Publishing in Particle Physics), have entered into an agreement to publish high-energy physics (HEP) articles from the three top journals of the APS – Physical Review Letters, Physical Review D, and Physical Review C - as open access as of January 1, 2018. This will bring SCOAP³ to attaining near to 90% coverage of all high energy physics literature, allowing free and unrestricted sharing of scientific information within the global scientific community, for the advancement of science.
Managed by CERN, SCOAP³ is the largest global open access initiative ever created, a global consortium of 3,000 libraries and research institutes in 44 countries, with the added support of eight research funding agencies. Since its beginnings in 2014, it has made 15,000 articles by about 20,000 scientists from 100 countries accessible to anyone.
For further details, see these press releases from CERN, APS and SCOAP³.