Explore a 29-minute conference talk on variability, dynamos, and large-scale field growth in simplified models of black hole accretion disks. Delivered by Christopher Reynolds from the University of Maryland at the Kavli Institute for Theoretical Physics' "Turbulence in the Universe" conference. Delve into the complexities of astrophysical turbulence across various cosmic environments, from stellar interiors to galaxy clusters. Gain insights into recent advancements in observational and theoretical studies of turbulence and their impact on multiple branches of astronomy. Discover interdisciplinary discussions on topics such as turbulent dynamos, magnetic reconnection, plasma physics, and astrophysical applications of magnetized turbulence.