Inspired by Wangari Maathai, who planted 30 million trees in Africa in 30 years, Felix formulated his vision: Children could plant one million trees in every country on earth and thereby offset CO2 emissions all on their own, while adults are still talking about doing it. Each tree binds a CO2 intake of 10 kg per year. The first tree is planted and Klaus Töpfer, former German Federal Minister of the Environment and executive director of the United Nations Environment Programme (UNEP) becomes official patron. Felix promises UNEP that children in every country on earth will plant one million trees. In the following years, Plant-for-the-Planet developed into a global movement.