What do you think is the best way to create impact/maximise potential impact on the world for a high school student developer? Elon Musk named a few things he t

What do you think is the best way to create impact/maximise potential impact on the world for a high school student developer? Elon Musk named a few things he thinks would be world changing in 10-20 years from now? What do you think high school students should be working on right now?