This paper reviews Michael Rycroft's career as part of his 80th birthday celebrations in terms of the social and structural changes in international science. His contributions to research, teaching, and management across solar–terrestrial and ionospheric physics, and atmospheric and space science are also discussed. The paper is based on primary sources combined with the recollections of colleagues.

John Alan Chalmers spent almost 40 years working on atmospheric electricity at Durham University, UK. He is particularly remembered in the atmospheric physics community for his accessible and insightful textbook, Atmospheric Electricity. He also supervised over 35 research students. This article, inspired by a Royal Meteorological Society discussion meeting held at Durham, provides an overview of his background, scientific contributions, and legacy to modern atmospheric science.