There are so many climate heroes now. In my lifetime I have seen things change from climate being a subject only a few people were worried about to the Paris Agreement which every country except two (sorry - three), has signed up to. It is now cool to want cool. It is fascinating to hear the individual journeys that people have taken to become part of this climate movement. Here are a few examples.
I love this website: http://climateheroes.org/
These stories make you feel happy to watch. https://www.youtube.com/watch?v=nozdbgeZFxQ