Target is people who don't know already or are not interested. We on hacker news are interested, I am working on solving climate change problem, this is almost

Target is people who don't know already or are not interested. We on hacker news are interested, I am working on solving climate change problem, this is almost daily topic. Such actions only work to raise awareness. Are such actions successfull or have proper good impact? I think not, but that's different topic than "who is target audience".