At the age of nine, Felix Finkbeiner hatched a plan to plant a million trees in his native Germany. Now he's a global eco-superhero. Felix, from the unremarkable town of Pcking, near Munich, is an environmental superstar at the helm of a global network of child activists whose aim is to mitigate climate change by reforesting the planet. His organisation, Plant for the Planet, recently achieved its target of planting one million trees in Germany; now, Felix is spreading his message around the world. Plant for the Planet is up and running in 131 countries, and the British chapter was established last month, with the aim of planting a million trees here over the next few years. Individuals or planting groups can either 'pledge' to plant a certain number of trees or make a cash donation - 1 buys one tree. The results are logged on the Plant for the Planet website. Plant for the Planet started as a school project four years ago. 'I was supposed to give a presentation on a Monday,' Felix says, 'so over the weekend I Googled stuff on climate change and came across Wangari Maathai's campaign.' Maathai, the daughter of Kenyan farmworkers..., began her own tree-planting campaign, the Green Belt Movement, in 1977 as a method of tackling soil erosion and encouraging local communities, particularly women, to stand up for themselves, not only environmentally but also politically. In 2004, 45 million trees later, she won the Nobel Peace Prize. 'She achieved so much with so little,' Felix says. 'So I had the idea that we children could also do something.'