There have been som interesting talks by my colleagues and co-authors at GECCO 2021:

Thomas Bartz-Beielstein presented a keynote at the SAEOpt Workshop, talking about surrogate model-based tuning of deep learning algorithms:
https://www.spotseven.de/gecco-2021-contributions-from-the-spotseven-lab/

Sowmya Chandrasekaran presented the GECCO industrial challenge:
https://www.spotseven.de/great-presentation-from-sowmya-chandrasekaran-at-gecco-competition-on-optimization-of-a-simulation-model-for-a-capacity-and-resource-planning-task-for-hospitals-under-special-consideration-of-the-c/

Jörg Stork presented our paper on behavior-based neuroevolutionary training in reinforcement learning:
https://www.spotseven.de/jorg-stork-talking-about-behavior-based-neuroevolutionary-training-in-reinforcement-learning-at-gecco-2021/