The 25 most-downloaded Chemical Science articles in the second quarter of 2015 were as follows:  Copper-catalyzed intermolecular C(sp3)–H bond functionalization towards the synthesis of tertiary carbamates Prasanna Kumara Chikkade, Yoichiro Kuninobu and Motomu Kanai DOI: 10.1039/C5SC00238A, Edge Article Palladium(0) NHC complexes: a new avenue to highly efficient phosphorescence Adam F. Henwood, Mathieu Lesieur, Ashu K. […]