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.
(..) oh, something absolutely extraordinary since breakfast. Oh, can I see? No, no, no. Not yet. Please, come on. Don't be silly. No. The impact will be too strong. Let me see, please? Well, all right. There you go. How about that? Hmm. (..)1975 The Return of the Pink Panther