Nature, Published online: 14 January 2026; doi:10.1038/s41586-025-09922-yArtificial intelligence boosts individual scientists’ output, citations and career progression, but collectively narrows research diversity and reduces collaboration, concentrating work in data-rich areas and potentially limiting broader scientific exploration.

Nature, Published online: 04 August 2025; doi:10.1038/d41586-025-02454-5The deployment of capable AI agents raises fresh questions about safety, human–machine relationships and social coordination.