For Nora Langdon, the moment of truth came on the stairs. She was 64 years old. Up to that point, Langdon had lived a largely ...

Aldhahyan, R. , Osman, K. , Alharbi, A. and Alhodaib, A. (2025) Assessment of Radon Gas, Heavy Metals, and Physicochemical Parameters in Groundwater of Al-Qassim Region, Kingdom of Saudi Arabia. Open ...