Royal Society Publishing has recently published a special double issue of Philosophical Transactions A: Exploring the length scales, timescales and chemistry of challenging materials (Part I & II) compiled and edited by C Richard A Catlow, Chris Howard, Andrea Sella, Ana Jorge Sobrido, and Martin Wilding.

The articles can be accessed directly at www.bit.ly/TransA2258 and www.bit.ly/TransA2259
A print version is also available at the special price of £40.00 per issue from sales@royalsociety.org

This special double issue of Philosophical Transactions A honours the scientific contributions of our dear friend and colleague
Prof. Paul F. McMillan (University College London), who sadly passed away in 2022.
Paul was a major contributor to solid-state science, materials chemistry and high-pressure physics. He also deeply influenced and contributed to the field of mineralogy under extreme conditions of temperature and pressure. He developed a unique framework for understanding the microscopic and vibrational properties underpinning the macroscopic characteristics of melts and minerals.