<p>Condensed matter physics presents many challenges. Important ones include phenomena and phases of matter that have very unusual characteristics, particularly those which manifest at temperatures approaching absolute zero. At low enough temperatures, the quantum nature of electron-lattice, electron-atom and electron-electron interactions become more and more evident.</p><p>Myriam Sarachik distinguished herself in the carefully designed and insightful exploration of the behaviour of quantum matter, producing data of quality and character that was essential for distinguishing between competing models and theories. Her data permitted the zeroing in on the happenings at the electronic level, particularly so in the case of what is known as the Kondo effect, furthering the blooming of theoretical methods like the renormalization group method with applications ranging wide over a range of materials, including topological materials. Experiments that are the core of the scientific contributions of this month’s featured scientist gave some decisive insights into matters pertaining to quantum condensed matter. The article-in-a-box on Myriam Sarachik in this issue, by a renowned low-temperature physicist, is an excellent and concise summary of her work. This general article is meant for readers who want a more detailed account of the areas in which Myriam Sarachik worked, and the underlying physics.</p>