Jordan Ellenberg (University of Wisconsin) 
Upper bounds for rational points

Shafi Goldwasser (MIT & Simons Institute for the Theory of Computing) 
Secure Machine Learning

Martin Hairer (Imperial College London) 
Towards a Euclidean Yang-Mills theory

Adam Kucharski (London School of Hygiene & Tropical Medicine) 
Using mathematical models to generate better pandemic insights

Corinna Ulcigrai (University of Zürich) 
Parabolic flows and slow chaos

Cédric Villani (Université de Lyon) 
Convergence to equilibrium through reversible mechanisms in mathematical physics: known and unknown