June 4, 2013 (HP60). The Editorial Board of Reports on Progress in Physics (ROPP) made freely accessible for the next 6 months several overview papers of which the following two should attract attention of our readers:
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Overview on the physics and materials of the new superconductor KxFe2−ySe2
Hai-Hu Wen 2012 Rep. Prog. Phys. 75 112501
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History and progress on accurate measurements of the Planck constant
Richard Steiner 2013 Rep. Prog. Phys. 76 016101