Composite fermions emerge in the fractional quantum Hall effect. Now, it has been shown that these objects can group into bubbles and that these can order into a lattice.

Strongly driven light sources have become useful in many ways but are limited to classical emission. A quantum-optical theory now shows how non-classical states of light can be achieved from strongly-driven many-body systems, for example, non-coherent and correlated high-harmonic generation.

Strong correlations between electrons in topological surface states drive the formation of surface van Hove singularities. These may be linked to charge density waves in the surface states.

Biomolecular condensates play a role in cellular processes and their size affects reaction pathways. The size distribution is connected to varying contributions of nucleation and coalescence.

Engineering of the spin–orbit interactions in a magnetic multilayered structure makes it possible to coherently generate coherent spin waves using terahertz radiation, which could benefit the development of spintronic devices.

Films of the correlated oxide NdNiO₃ form a metallic antiferromagnetic phase that can be identified using electrical currents, raising the prospect of applications in spintronics.

The authority of science within society is contested by antiscientific movements. To restore trust, science education should involve students in the social processes of knowledge production.

As 2023 begins, we look forward to some of the new things the journal will do this year and introduce the team of editors who will do them.

The SI prefixes provide an essential mechanism for the effective communication of scientific information. Richard Brown and Martin Milton inform us about the latest developments.