When the big ones destroyed the forest

Once upon a time, there was a girl named Greta. She lived in a beautiful, large forest. One day, the grown-ups began to destroy the forest. But Greta had an idea... What can children and young people do in a world dominated by powerful adults? Quite a lot, because in the beginning, all it takes is an idea to spark something. And sometimes, that develops into a global movement that can make a difference!