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

Using the first complete dataset of more than 415 million buildings across 50 countries in sub-Saharan Africa, researchers at the University of Chicago created an unprecedented approach to urban development, down to each street block.

Thanks to a rotating platform, a new 3D metal printer can deposit and fuse metal powder in a single step, thereby working faster than conventional machines.

The system can process two different metals in a single operation, which streamlines manufacturing and minimises material waste.

A prototype was developed in just nine months and offers potential for application in aerospace and propulsion technology – in fact, in any area where there is a need for lightweight, roughly cylindrical objects.