International Day of Peace
From the United Nations website:
Each year the International Day of Peace is observed around the world on 21 September. The General Assembly has declared this as a day devoted to strengthening the ideals of peace, both within and among all nations and peoples.
The theme draws attention to the importance of combatting climate change as a way to protect and promote peace throughout the world.
Climate change causes clear threats to international peace and security. Natural disasters displace three times as many people as conflicts, forcing millions to leave their homes and seek safety elsewhere. The salinization of water and crops is endangering food security, and the impact on public health is escalating. The growing tensions over resources and mass movements of people are affecting every country on every continent.
Peace can only be achieved if concrete action is taken to combat climate change. Speaking to young Māoris and people of the Pacific islands in New Zealand in May, UN Secretary-General António Guterres said “nature does not negotiate” and emphasized four key measures that Governments should prioritize in order to reach carbon neutrality by 2050: tax pollution, not people; stop subsidizing fossil fuels; stop building new coal plants by 2020; focus on a green economy, not a grey economy.