We document a causal impact of online user-generated information on real-world economic outcomes. In particular, we conduct randomized field experiment to test whether additional content Wikipedia pages about cities affects tourists' choices overnight visits. Our treatment adding increases stays in treated compared nontreated cities. The is largely driven by improvements shorter and relatively ...

All hydrodynamical simulations of turbulent astrophysical phenomena require sub-grid scale models to properly treat energy dissipation and metal mixing. We present the first implementation application an anisotropic eddy viscosity mixing model in Lagrangian simulations, including a dynamic procedure for parameter. compare these two directly common Smagorinsky variant. Using mesh-free finite mas...