Nature, Published online: 06 March 2026; doi:10.1038/d41586-026-00771-xEvidence from koalas suggest that even species pushed to the brink of extinction can recover lost genetic diversity. Plus, the first ‘half Möbius’ carbon-based molecule and a mathematician modelling Mexico’s drug cartels.

Nature, Published online: 05 March 2026; doi:10.1038/d41586-026-00754-yEmerging forensic methods can differentiate between twin suspects in criminal cases. Plus, GLP-1 obesity drugs can help stave off addictions and scientists claim to have made a rare hexagonal diamond.