On September 3, 2024, Amadeus Reinald from LIRMM, Université de Montpellier gave a talk at the Discrete Math Seminar on the existence of every oriented tree of fixed size inside a digraph of large chromatic number. The title of his talk was “Oriented trees in $O(k\sqrt k)$-chromatic digraphs, a subquadratic bound for Burr’s conjecture“.