By 2008, he had joined the UNEP Junior Board Member and gave speeches at climate discussions. His initiative, Plant for the Planet, spreads over Germany and around the globe, to motivate children to participate in the fight against climate change. With time, Plant for the Planet, was no longer just Felix’s dream, it became a global initiative. Today more than 55,000 of them, between the age of 9-12, are Ambassadors for Climate Justice. They even started a campaign entitled ‘Stop talking. Start planting’ to spread the message. Famous personalities came forward to show their support like Harrison Ford, apl.de.ap, Prince Albert of Monaco and Michael Otto.