Nature, Published online: 14 October 2026; doi:10.1038/s41586-026-11164-5

A mouse embryo model derived from chemically induced totipotent-like stem cells progresses through key developmental milestones, including gastrulation, embryonic axis formation, haematopoiesis and early organogenesis.

Nature, Published online: 14 October 2026; doi:10.1038/s41586-026-11109-y

Two-dimensional graphene films with unusual folded surfaces are synthesized through a modular assembly strategy and show enhanced strength, toughness and elastic strain owing to stress distribution between interlayer folds.