Mid-May linkage
An economic analysis of public domain photos on Wikipedia shows that "massive social harm was done by the most recent copyright term extension that has prevented millions of works from falling into the public domain since 1998"
An infinite tree of regular dodecahedra sharing a cube of vertices between each neighboring pair (G+)
Combinatorics videos collected by Igor Pak
The inspiration for some of Man Ray's art in a collection of mathematical models
Trilingual powers of two in a video on street-vendor cookie-making
Winner, best name of an actual publication (hacker zine PoC||GTFO; G+)
Over 2/3 of listed open access journals charge no author fees (G+)
Open letter to Google by 80 academics asking for greater transparency on "right to be forgotten"