Lilith S

Toy blocks such as Lego allow complex structures to be built from the simple blocks. Similarly, synthetic chemists are attempting to make large and complex molecules from simple reagents (1). On page 1329 of this issue, Qiu et al. (2) report an elegant strategy for making well-defined micrometer-scale superstructures by using a series of polymerization techniques and selective self-assembly processes. Authors: In-Hwan Lee, Suyong Shin, Tae-Lim Choi