Climate change is one of the most urgent and biggest problems. We all have to do our part to reduce the effect of climate change. A good way to tie carbon is to plant trees and forests. Schools have planted trees in ENO since 2004. ENO made a commitment of planting 100 million trees by 2017 in Rio+20 Summit. Schools planted 30 million trees and countries made their own commitments. The number was not yet reached but we are working on the achieve this number. We have organised tree planting contests called ENO Treelympics since 2014. A forest project will take place 2019-2025 based on climate agreement by schools in 2019 ( an answer to Paris agreement).