Linkage for the end of the year

After I returned to Google+ in mid-year (once Google rescinded their real-name policy) I've been sharing approximately a link a day there, and collecting the links for twice-monthly roundups here (in part to allow me to find my posts again since G+ provides very little organization for old posts). This is the latest batch:

• Pseudonyms are used mostly for privacy, not trolling

• Attacks on the peer review system including authorship for sale, false refereeing, plagiarism, etc (the G+ post includes several more links)

• Randomly generated polygonal insects

• Qu-ant reversible cellular automata (G+ reshare)

• Sonobe unit polyhedra, modular polyhedra as Christmas decorations (G+ reshare)

• Domino chain reaction video demonstrating exponential scaling in energy amplification (G+)

• The adventitious angle puzzle for the advent season

• The Gauss Christmath Special video

• Collections of graph theory open problems

• Knuth's dragon-curve mistake video (G+ reshare)

• One million arXiv preprints

• Origami batteries