We hope that these programs will have a positive 'impact on' the community. [=will help the community]
The stress of her job is having a negative 'impact on' her health. [=is harming her health]
We need to be concerned about the environmental 'impacts' of all this construction.
(..) Thanks. The spire's Vibranium. If I get Thor to hit it... It'll crack, but that's not enough, the impact would still be devastating. Maybe if we could cap the other end, keep the atomic action doubling back. That could vaporize the city. And everyone on it. The next wave's gonna hit any minute. (..)2015 Avengers: Age of Ultron
(..) - Now go be a hero. - Raaar! The Vibranium core has got a magnetic field, that's what's keeping the rock together. - If it drops? - Right now the impact would kill thousands. Once it gets high enough... ...global extinction. That building's not clear, its tenth floor. Hi. Okay. Get in the tub! (..)2015 Avengers: Age of Ultron