In this issue, M. Bertau et al. review recovery processes and recycling strategies for valuable metals. What are the current trends from antimony to tin via rare earth elements? In the Communications section, M. A. Petrukhina et al. report on a double concave cesium encapsulation by two charged sumanenyl bowls (see picture). G. Pacchioni et al. observed ferromagnetic interactions in highly stable, partially reduced TiO₂: the S=2 state in Anatase.

S. G. Srivatsan et al. elucidated the structure of the ribosomal RNA decoding site which contains a selenium-modified responsive fluorescent ribonucleoside probe. M. Adeli et al. succeeded in the controlled covalent functionalization of thermally reduced graphene oxide to generate defined bifunctional 2D nanomaterials, and M. Chang et al. describe a one-pot N-deprotection and catalytic intramolecular asymmetric reductive amination for the synthesis of tetrahydroisoquinolines.

• Angewandte Chemie 10/2017: A Perfect Ten,
  Angew. Chem. Int. Ed. 2017, 56 (10).