Another SIGGRAPH/DigiPro thing I liked: Weta's new fire solver from Avatar 3. As usual for Alexey Stomakhin's work, this was astoundingly cool. Neat trick: to make the fire tornado spin, regular forces didn't work well, so they... spun the world instead. https://dl.acm.org/doi/epdf/10.1145/3819990.3820026