19. Spread the word. (Sounds like you know people who need to hear it.)
Do the research. Compare the kinds of research being done and based on the quality of the methods and the researchers and what they have researched, then spread the word. Climate change is real. It is due to human activity that puts too much carbon dioxide into the atmosphere. We either change and now, not sometime in the future, or our children and grandchildren will face very serious catastrophes.