Pranay Ranjan

CORRESPONDENCE 11 March 2025 Brazil will host the 30th Conference of the Parties (COP30) at the end of this year, as the world faces cascading crises. For too long, climate summits have been stages for ambitious declarations. But without enforcement, promises are set to remain empty (S. Chan et al. Nature Clim. Change 12, 628–633; 2022).

Room Temperature Operated Flexible MWCNTs/Nb2O5 Hybrid Breath Sensor for the Non-Invasive Detection of Exhaled Diabetes Biomarker Advancements in diabetes management increasingly rely on non-invasive monitoring of biomarkers present in exhaled breath. This study introduces a novel room temperature operated flexible acetone sensing platform, leveraging a hybrid material composed of multi-walled carbon nanotubes (MWCNTs) and niobium oxide (Nb2O5).

1 Introduction The quality of the water we drink correlates with our overall quality of life. Of the 1386 million km3 of water on the Earth, only 10.63 million km3 is freshwater, and just 30.1% of that freshwater is groundwater.[1] Unfortunately, water is susceptible to several contaminants that can adversely affect its safety for consumption.