Colourful patterns in two-dimensional lead halide perovskites are created by letting them self-etch into tiny squares that can template epitaxial growth.

A survey of the reconstructed gene set of the last eukaryotic common ancestor shows a consistent link between Asgard archaea and the origin of numerous, functionally diverse eukaryotic genes, demonstrating the dominant Asgard contribution to eukaryogenesis.

Molecular mimicry between a gut commensal and a tumour antigen forms part of an important mechanistic framework that can boost the efficacy of immune checkpoint blockade therapy and restrain tumour growth.

Fabrication of fully stretchable organic light-emitting diodes incorporating an intrinsically stretchable exciplex-assisted phosphorescent layer along with MXene-contact stretchable electrodes is described, demonstrating high efficiency and mechanical compliance for applications in next-generation wearable and deformable displays.