The world is a lot greener thanks to this 20-year-old and his army of “climate ambassadors” who have pledged to plant trees and use youth power to avert climate change.

Ever since he was 9 years old, Felix Finkbeiner has been an international figurehead for saving the planet. In 2007, the German youngster founded a global youth movement called “Plant for the Planet” – an initiative that trains and recruits kids from around the world to plant trees as a means of combatting climate change.

Since its creation, the movement has already made significant progress with the help of over 100,000 enthusiastic youth between the ages of 9 and 12—and he planted his one-millionth tree in Germany when he was just twelve. Alongside the Paris Agreement, Finkbeiner’s campaign is a formidable defense of the planet.

His speeches as a pre-teen to the European Parliament and the United Nations General Assembly inspired kids from over 90 countries to join his coalition, saying “Forests are not only the livelihood of billions, but for us children forests are our future.”

The UN then handed over to Felix the leadership of its Billion Tree Program, which was inspired by the Kenyan Nobel Peace Prize-winning activist Wangari Maathai, whose Green Belt Movement planted 30 million trees in Africa. He is enlarging the program, transforming it…