Bjørn Hallvard Samset is a physicist and science disseminator, with broad experience in atmospheric science and global climate modelling.

He is studying precipitation and the role of atmospheric aerosols in a changing climate, mainly through climate modelling. Bjørn is a regular newspaper columnist and science commentator. He has previously worked on particle physics, with the ATLAS collaboration at CERN and the BRAHMS collaboration at RHIC. Bjørn has a PhD in Nuclear Physics from the University of Oslo (2006).