Global Ecological Pilgrimage Begins in Hometown

The 'On-Sum Campaign,' officially known as the 'Breath of Life for the Whole World' campaign, combines the concept of 'On' from 'the whole world' with 'Sum,' meaning breath, to promote a planet where all life can breathe together.

This ecological initiative is part of the core values of the 2027 Seoul World Youth Day, emphasizing 'Love and Ecology.'
 
The campaign is inspired by Pope Francis' ecological encyclical, 'Laudato Si,' which highlights the importance of caring for our common home. Since April 2025, the organizing committee has collaborated with the Korea Forest Service and Seoul City to plant trees at Sky Park in World Cup Park every spring and fall. The goal is to plant approximately 300 trees each time, totaling 1,800 trees by 2027.
 
Starting in August 2026, the campaign has expanded its domestic activities into a 'Global Tree Planting Movement.' Pilgrims and youth groups from various countries are encouraged to plant trees suited to their local climate and ecological environment, sharing photos, species, planting locations, dates, and reflections on the online platform Padlet. Participation records will be displayed on a map by country, showcasing the ecological solidarity created by young people worldwide. The Laudato Si' Movement (LSM), a Catholic environmental network, is collaborating on the international outreach.
 
It is important to note that a single tree transported by air to Seoul does not immediately offset the carbon emissions generated during its journey. To assess the carbon absorption effect, factors such as species, survival rates, growth periods, and long-term management must be monitored.
 
Thus, the significance of the On-Sum Campaign goes beyond mere 'carbon offsetting.' It encourages individuals to reflect on the environmental impact of their travels and to take ecological responsibility in their hometowns. The pilgrimage to Seoul begins not when one boards a plane, but at the moment a tree is planted.