A chiral copper catalyst, generated in situ from commercially available components, can be used to achieve photoinduced deracemization of alkyl halides through carbon–halogen bond cleavage.

Using a natural experiment that avoids common bias concerns, this study finds that the live-attenuated shingles vaccine reduced the probability of a new dementia diagnosis within a follow-up period of 7 years by approximately one-fifth.

A general reinforcement-learning algorithm, called Dreamer, outperforms specialized expert algorithms across diverse tasks by learning a model of the environment and improving its behaviour by imagining future scenarios.

Neonatal antibiotic use is shown to reduce immune response to infant vaccines, accompanied by reduced abundance of Bifidobacteria in the gut microbiota, with experiments in mice indicating that probiotic therapy could be beneficial.

Non-classical correlations between two photons in the near-field regime give rise to entanglement in their total angular momentum, leading to a completely different structure of quantum correlations of photon pairs.