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Now, Hyun Suk Wang and colleagues, from ETH Zurich, Switzerland, have demonstrated a light-triggered depolymerization technique that provides a path to better plastic recycling (Science 387, 874–880; 2025). The feat was carried out for PMMA (poly(methyl methacrylate)), a plastic commercialized as plexiglass. With the aid of light, the plexiglass (left image) is broken down into its monomer (right image)

Two-dimensional materials have revolutionized the field of photonics by enabling the manipulation of light at the nanoscale. As their potential continues to grow, we can expect to see more innovative applications emerging in the future.

The correspondence “Increasing diversity in conference speaker programmes” by Polman and colleagues in the December issue of Nature Photonics1 targets an important and timely topic in science and engineering, and specifically in photonics, namely the underrepresentation of minority groups as speakers at conferences. In this piece, they use their collective voice in a call to action to shift underlying

Neuromorphic photonic systems mimicking biological neurons promise to boost the efficiency of light-based computing.