Levels of carbon dioxide — the most abundant planet-warming gas in the air — jumped up by a record amount in 2024.

Researchers developed this highly sensitive and cost-effective gas sensor using covalent ... EC vapor at concentrations as low as 1.15 parts per million (ppm). According to the researchers ...

This enables precise evaluation of material performance under Direct Air Capture (DAC) conditions around 400 ppm, and also flue gas conditions in the region of 15 %. With an integrated heater that ...