Remote gas sensing in complex environments represents a critical frontier in environmental science. A team of Chinese scientists has developed a novel dual-comb spectroscopy system featuring single-photon detection, exceptional robustness, and broadband spectral analysis. This technology enables precise identification of gas compositions under harsh conditions with attowatt sensitivity, advancing global climate monitoring and pollution detection. It is poised to address urgent societal demands for sustainable and intelligent sensing solutions.

Empowering national regulators to build the tools of a digital society takes focus for the 25th year of the ITU Global Symposium for Regulators